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evalkit_tf446/lib/python3.10/_aix_support.py

@@ -0,0 +1,89 @@
+"""Shared AIX support functions."""
+
+import sys
+import sysconfig
+
+try:
+    import subprocess
+except ImportError:  # pragma: no cover
+    # _aix_support is used in distutils by setup.py to build C extensions,
+    # before subprocess dependencies like _posixsubprocess are available.
+    import _bootsubprocess as subprocess
+
+
+def _aix_tag(vrtl, bd):
+    # type: (List[int], int) -> str
+    # Infer the ABI bitwidth from maxsize (assuming 64 bit as the default)
+    _sz = 32 if sys.maxsize == (2**31-1) else 64
+    # vrtl[version, release, technology_level]
+    return "aix-{:1x}{:1d}{:02d}-{:04d}-{}".format(vrtl[0], vrtl[1], vrtl[2], bd, _sz)
+
+
+# extract version, release and technology level from a VRMF string
+def _aix_vrtl(vrmf):
+    # type: (str) -> List[int]
+    v, r, tl = vrmf.split(".")[:3]
+    return [int(v[-1]), int(r), int(tl)]
+
+
+def _aix_bosmp64():
+    # type: () -> Tuple[str, int]
+    """
+    Return a Tuple[str, int] e.g., ['7.1.4.34', 1806]
+    The fileset bos.mp64 is the AIX kernel. It's VRMF and builddate
+    reflect the current ABI levels of the runtime environment.
+    """
+    # We expect all AIX systems to have lslpp installed in this location
+    out = subprocess.check_output(["/usr/bin/lslpp", "-Lqc", "bos.mp64"])
+    out = out.decode("utf-8")
+    out = out.strip().split(":")  # type: ignore
+    # Use str() and int() to help mypy see types
+    return (str(out[2]), int(out[-1]))
+
+
+def aix_platform():
+    # type: () -> str
+    """
+    AIX filesets are identified by four decimal values: V.R.M.F.
+    V (version) and R (release) can be retreived using ``uname``
+    Since 2007, starting with AIX 5.3 TL7, the M value has been
+    included with the fileset bos.mp64 and represents the Technology
+    Level (TL) of AIX. The F (Fix) value also increases, but is not
+    relevant for comparing releases and binary compatibility.
+    For binary compatibility the so-called builddate is needed.
+    Again, the builddate of an AIX release is associated with bos.mp64.
+    AIX ABI compatibility is described  as guaranteed at: https://www.ibm.com/\
+    support/knowledgecenter/en/ssw_aix_72/install/binary_compatability.html
+
+    For pep425 purposes the AIX platform tag becomes:
+    "aix-{:1x}{:1d}{:02d}-{:04d}-{}".format(v, r, tl, builddate, bitsize)
+    e.g., "aix-6107-1415-32" for AIX 6.1 TL7 bd 1415, 32-bit
+    and, "aix-6107-1415-64" for AIX 6.1 TL7 bd 1415, 64-bit
+    """
+    vrmf, bd = _aix_bosmp64()
+    return _aix_tag(_aix_vrtl(vrmf), bd)
+
+
+# extract vrtl from the BUILD_GNU_TYPE as an int
+def _aix_bgt():
+    # type: () -> List[int]
+    gnu_type = sysconfig.get_config_var("BUILD_GNU_TYPE")
+    if not gnu_type:
+        raise ValueError("BUILD_GNU_TYPE is not defined")
+    return _aix_vrtl(vrmf=gnu_type)
+
+
+def aix_buildtag():
+    # type: () -> str
+    """
+    Return the platform_tag of the system Python was built on.
+    """
+    # AIX_BUILDDATE is defined by configure with:
+    # lslpp -Lcq bos.mp64 | awk -F:  '{ print $NF }'
+    build_date = sysconfig.get_config_var("AIX_BUILDDATE")
+    try:
+        build_date = int(build_date)
+    except (ValueError, TypeError):
+        raise ValueError(f"AIX_BUILDDATE is not defined or invalid: "
+                         f"{build_date!r}")
+    return _aix_tag(_aix_bgt(), build_date)

evalkit_tf446/lib/python3.10/_compression.py

@@ -0,0 +1,162 @@
+"""Internal classes used by the gzip, lzma and bz2 modules"""
+
+import io
+import sys
+
+BUFFER_SIZE = io.DEFAULT_BUFFER_SIZE  # Compressed data read chunk size
+
+
+class BaseStream(io.BufferedIOBase):
+    """Mode-checking helper functions."""
+
+    def _check_not_closed(self):
+        if self.closed:
+            raise ValueError("I/O operation on closed file")
+
+    def _check_can_read(self):
+        if not self.readable():
+            raise io.UnsupportedOperation("File not open for reading")
+
+    def _check_can_write(self):
+        if not self.writable():
+            raise io.UnsupportedOperation("File not open for writing")
+
+    def _check_can_seek(self):
+        if not self.readable():
+            raise io.UnsupportedOperation("Seeking is only supported "
+                                          "on files open for reading")
+        if not self.seekable():
+            raise io.UnsupportedOperation("The underlying file object "
+                                          "does not support seeking")
+
+
+class DecompressReader(io.RawIOBase):
+    """Adapts the decompressor API to a RawIOBase reader API"""
+
+    def readable(self):
+        return True
+
+    def __init__(self, fp, decomp_factory, trailing_error=(), **decomp_args):
+        self._fp = fp
+        self._eof = False
+        self._pos = 0  # Current offset in decompressed stream
+
+        # Set to size of decompressed stream once it is known, for SEEK_END
+        self._size = -1
+
+        # Save the decompressor factory and arguments.
+        # If the file contains multiple compressed streams, each
+        # stream will need a separate decompressor object. A new decompressor
+        # object is also needed when implementing a backwards seek().
+        self._decomp_factory = decomp_factory
+        self._decomp_args = decomp_args
+        self._decompressor = self._decomp_factory(**self._decomp_args)
+
+        # Exception class to catch from decompressor signifying invalid
+        # trailing data to ignore
+        self._trailing_error = trailing_error
+
+    def close(self):
+        self._decompressor = None
+        return super().close()
+
+    def seekable(self):
+        return self._fp.seekable()
+
+    def readinto(self, b):
+        with memoryview(b) as view, view.cast("B") as byte_view:
+            data = self.read(len(byte_view))
+            byte_view[:len(data)] = data
+        return len(data)
+
+    def read(self, size=-1):
+        if size < 0:
+            return self.readall()
+
+        if not size or self._eof:
+            return b""
+        data = None  # Default if EOF is encountered
+        # Depending on the input data, our call to the decompressor may not
+        # return any data. In this case, try again after reading another block.
+        while True:
+            if self._decompressor.eof:
+                rawblock = (self._decompressor.unused_data or
+                            self._fp.read(BUFFER_SIZE))
+                if not rawblock:
+                    break
+                # Continue to next stream.
+                self._decompressor = self._decomp_factory(
+                    **self._decomp_args)
+                try:
+                    data = self._decompressor.decompress(rawblock, size)
+                except self._trailing_error:
+                    # Trailing data isn't a valid compressed stream; ignore it.
+                    break
+            else:
+                if self._decompressor.needs_input:
+                    rawblock = self._fp.read(BUFFER_SIZE)
+                    if not rawblock:
+                        raise EOFError("Compressed file ended before the "
+                                       "end-of-stream marker was reached")
+                else:
+                    rawblock = b""
+                data = self._decompressor.decompress(rawblock, size)
+            if data:
+                break
+        if not data:
+            self._eof = True
+            self._size = self._pos
+            return b""
+        self._pos += len(data)
+        return data
+
+    def readall(self):
+        chunks = []
+        # sys.maxsize means the max length of output buffer is unlimited,
+        # so that the whole input buffer can be decompressed within one
+        # .decompress() call.
+        while data := self.read(sys.maxsize):
+            chunks.append(data)
+
+        return b"".join(chunks)
+
+    # Rewind the file to the beginning of the data stream.
+    def _rewind(self):
+        self._fp.seek(0)
+        self._eof = False
+        self._pos = 0
+        self._decompressor = self._decomp_factory(**self._decomp_args)
+
+    def seek(self, offset, whence=io.SEEK_SET):
+        # Recalculate offset as an absolute file position.
+        if whence == io.SEEK_SET:
+            pass
+        elif whence == io.SEEK_CUR:
+            offset = self._pos + offset
+        elif whence == io.SEEK_END:
+            # Seeking relative to EOF - we need to know the file's size.
+            if self._size < 0:
+                while self.read(io.DEFAULT_BUFFER_SIZE):
+                    pass
+            offset = self._size + offset
+        else:
+            raise ValueError("Invalid value for whence: {}".format(whence))
+
+        # Make it so that offset is the number of bytes to skip forward.
+        if offset < self._pos:
+            self._rewind()
+        else:
+            offset -= self._pos
+
+        # Read and discard data until we reach the desired position.
+        while offset > 0:
+            data = self.read(min(io.DEFAULT_BUFFER_SIZE, offset))
+            if not data:
+                break
+            offset -= len(data)
+
+        return self._pos
+
+    def tell(self):
+        """Return the current file position."""
+        return self._pos

evalkit_tf446/lib/python3.10/_osx_support.py

@@ -0,0 +1,574 @@
+"""Shared OS X support functions."""
+
+import os
+import re
+import sys
+
+__all__ = [
+    'compiler_fixup',
+    'customize_config_vars',
+    'customize_compiler',
+    'get_platform_osx',
+]
+
+# configuration variables that may contain universal build flags,
+# like "-arch" or "-isdkroot", that may need customization for
+# the user environment
+_UNIVERSAL_CONFIG_VARS = ('CFLAGS', 'LDFLAGS', 'CPPFLAGS', 'BASECFLAGS',
+                            'BLDSHARED', 'LDSHARED', 'CC', 'CXX',
+                            'PY_CFLAGS', 'PY_LDFLAGS', 'PY_CPPFLAGS',
+                            'PY_CORE_CFLAGS', 'PY_CORE_LDFLAGS')
+
+# configuration variables that may contain compiler calls
+_COMPILER_CONFIG_VARS = ('BLDSHARED', 'LDSHARED', 'CC', 'CXX')
+
+# prefix added to original configuration variable names
+_INITPRE = '_OSX_SUPPORT_INITIAL_'
+
+
+def _find_executable(executable, path=None):
+    """Tries to find 'executable' in the directories listed in 'path'.
+
+    A string listing directories separated by 'os.pathsep'; defaults to
+    os.environ['PATH'].  Returns the complete filename or None if not found.
+    """
+    if path is None:
+        path = os.environ['PATH']
+
+    paths = path.split(os.pathsep)
+    base, ext = os.path.splitext(executable)
+
+    if (sys.platform == 'win32') and (ext != '.exe'):
+        executable = executable + '.exe'
+
+    if not os.path.isfile(executable):
+        for p in paths:
+            f = os.path.join(p, executable)
+            if os.path.isfile(f):
+                # the file exists, we have a shot at spawn working
+                return f
+        return None
+    else:
+        return executable
+
+
+def _read_output(commandstring, capture_stderr=False):
+    """Output from successful command execution or None"""
+    # Similar to os.popen(commandstring, "r").read(),
+    # but without actually using os.popen because that
+    # function is not usable during python bootstrap.
+    # tempfile is also not available then.
+    import contextlib
+    try:
+        import tempfile
+        fp = tempfile.NamedTemporaryFile()
+    except ImportError:
+        fp = open("/tmp/_osx_support.%s"%(
+            os.getpid(),), "w+b")
+
+    with contextlib.closing(fp) as fp:
+        if capture_stderr:
+            cmd = "%s >'%s' 2>&1" % (commandstring, fp.name)
+        else:
+            cmd = "%s 2>/dev/null >'%s'" % (commandstring, fp.name)
+        return fp.read().decode('utf-8').strip() if not os.system(cmd) else None
+
+
+def _find_build_tool(toolname):
+    """Find a build tool on current path or using xcrun"""
+    return (_find_executable(toolname)
+                or _read_output("/usr/bin/xcrun -find %s" % (toolname,))
+                or ''
+            )
+
+_SYSTEM_VERSION = None
+
+def _get_system_version():
+    """Return the OS X system version as a string"""
+    # Reading this plist is a documented way to get the system
+    # version (see the documentation for the Gestalt Manager)
+    # We avoid using platform.mac_ver to avoid possible bootstrap issues during
+    # the build of Python itself (distutils is used to build standard library
+    # extensions).
+
+    global _SYSTEM_VERSION
+
+    if _SYSTEM_VERSION is None:
+        _SYSTEM_VERSION = ''
+        try:
+            f = open('/System/Library/CoreServices/SystemVersion.plist', encoding="utf-8")
+        except OSError:
+            # We're on a plain darwin box, fall back to the default
+            # behaviour.
+            pass
+        else:
+            try:
+                m = re.search(r'<key>ProductUserVisibleVersion</key>\s*'
+                              r'<string>(.*?)</string>', f.read())
+            finally:
+                f.close()
+            if m is not None:
+                _SYSTEM_VERSION = '.'.join(m.group(1).split('.')[:2])
+            # else: fall back to the default behaviour
+
+    return _SYSTEM_VERSION
+
+_SYSTEM_VERSION_TUPLE = None
+def _get_system_version_tuple():
+    """
+    Return the macOS system version as a tuple
+
+    The return value is safe to use to compare
+    two version numbers.
+    """
+    global _SYSTEM_VERSION_TUPLE
+    if _SYSTEM_VERSION_TUPLE is None:
+        osx_version = _get_system_version()
+        if osx_version:
+            try:
+                _SYSTEM_VERSION_TUPLE = tuple(int(i) for i in osx_version.split('.'))
+            except ValueError:
+                _SYSTEM_VERSION_TUPLE = ()
+
+    return _SYSTEM_VERSION_TUPLE
+
+
+def _remove_original_values(_config_vars):
+    """Remove original unmodified values for testing"""
+    # This is needed for higher-level cross-platform tests of get_platform.
+    for k in list(_config_vars):
+        if k.startswith(_INITPRE):
+            del _config_vars[k]
+
+def _save_modified_value(_config_vars, cv, newvalue):
+    """Save modified and original unmodified value of configuration var"""
+
+    oldvalue = _config_vars.get(cv, '')
+    if (oldvalue != newvalue) and (_INITPRE + cv not in _config_vars):
+        _config_vars[_INITPRE + cv] = oldvalue
+    _config_vars[cv] = newvalue
+
+
+_cache_default_sysroot = None
+def _default_sysroot(cc):
+    """ Returns the root of the default SDK for this system, or '/' """
+    global _cache_default_sysroot
+
+    if _cache_default_sysroot is not None:
+        return _cache_default_sysroot
+
+    contents = _read_output('%s -c -E -v - </dev/null' % (cc,), True)
+    in_incdirs = False
+    for line in contents.splitlines():
+        if line.startswith("#include <...>"):
+            in_incdirs = True
+        elif line.startswith("End of search list"):
+            in_incdirs = False
+        elif in_incdirs:
+            line = line.strip()
+            if line == '/usr/include':
+                _cache_default_sysroot = '/'
+            elif line.endswith(".sdk/usr/include"):
+                _cache_default_sysroot = line[:-12]
+    if _cache_default_sysroot is None:
+        _cache_default_sysroot = '/'
+
+    return _cache_default_sysroot
+
+def _supports_universal_builds():
+    """Returns True if universal builds are supported on this system"""
+    # As an approximation, we assume that if we are running on 10.4 or above,
+    # then we are running with an Xcode environment that supports universal
+    # builds, in particular -isysroot and -arch arguments to the compiler. This
+    # is in support of allowing 10.4 universal builds to run on 10.3.x systems.
+
+    osx_version = _get_system_version_tuple()
+    return bool(osx_version >= (10, 4)) if osx_version else False
+
+def _supports_arm64_builds():
+    """Returns True if arm64 builds are supported on this system"""
+    # There are two sets of systems supporting macOS/arm64 builds:
+    # 1. macOS 11 and later, unconditionally
+    # 2. macOS 10.15 with Xcode 12.2 or later
+    # For now the second category is ignored.
+    osx_version = _get_system_version_tuple()
+    return osx_version >= (11, 0) if osx_version else False
+
+
+def _find_appropriate_compiler(_config_vars):
+    """Find appropriate C compiler for extension module builds"""
+
+    # Issue #13590:
+    #    The OSX location for the compiler varies between OSX
+    #    (or rather Xcode) releases.  With older releases (up-to 10.5)
+    #    the compiler is in /usr/bin, with newer releases the compiler
+    #    can only be found inside Xcode.app if the "Command Line Tools"
+    #    are not installed.
+    #
+    #    Furthermore, the compiler that can be used varies between
+    #    Xcode releases. Up to Xcode 4 it was possible to use 'gcc-4.2'
+    #    as the compiler, after that 'clang' should be used because
+    #    gcc-4.2 is either not present, or a copy of 'llvm-gcc' that
+    #    miscompiles Python.
+
+    # skip checks if the compiler was overridden with a CC env variable
+    if 'CC' in os.environ:
+        return _config_vars
+
+    # The CC config var might contain additional arguments.
+    # Ignore them while searching.
+    cc = oldcc = _config_vars['CC'].split()[0]
+    if not _find_executable(cc):
+        # Compiler is not found on the shell search PATH.
+        # Now search for clang, first on PATH (if the Command LIne
+        # Tools have been installed in / or if the user has provided
+        # another location via CC).  If not found, try using xcrun
+        # to find an uninstalled clang (within a selected Xcode).
+
+        # NOTE: Cannot use subprocess here because of bootstrap
+        # issues when building Python itself (and os.popen is
+        # implemented on top of subprocess and is therefore not
+        # usable as well)
+
+        cc = _find_build_tool('clang')
+
+    elif os.path.basename(cc).startswith('gcc'):
+        # Compiler is GCC, check if it is LLVM-GCC
+        data = _read_output("'%s' --version"
+                             % (cc.replace("'", "'\"'\"'"),))
+        if data and 'llvm-gcc' in data:
+            # Found LLVM-GCC, fall back to clang
+            cc = _find_build_tool('clang')
+
+    if not cc:
+        raise SystemError(
+               "Cannot locate working compiler")
+
+    if cc != oldcc:
+        # Found a replacement compiler.
+        # Modify config vars using new compiler, if not already explicitly
+        # overridden by an env variable, preserving additional arguments.
+        for cv in _COMPILER_CONFIG_VARS:
+            if cv in _config_vars and cv not in os.environ:
+                cv_split = _config_vars[cv].split()
+                cv_split[0] = cc if cv != 'CXX' else cc + '++'
+                _save_modified_value(_config_vars, cv, ' '.join(cv_split))
+
+    return _config_vars
+
+
+def _remove_universal_flags(_config_vars):
+    """Remove all universal build arguments from config vars"""
+
+    for cv in _UNIVERSAL_CONFIG_VARS:
+        # Do not alter a config var explicitly overridden by env var
+        if cv in _config_vars and cv not in os.environ:
+            flags = _config_vars[cv]
+            flags = re.sub(r'-arch\s+\w+\s', ' ', flags, flags=re.ASCII)
+            flags = re.sub(r'-isysroot\s*\S+', ' ', flags)
+            _save_modified_value(_config_vars, cv, flags)
+
+    return _config_vars
+
+
+def _remove_unsupported_archs(_config_vars):
+    """Remove any unsupported archs from config vars"""
+    # Different Xcode releases support different sets for '-arch'
+    # flags. In particular, Xcode 4.x no longer supports the
+    # PPC architectures.
+    #
+    # This code automatically removes '-arch ppc' and '-arch ppc64'
+    # when these are not supported. That makes it possible to
+    # build extensions on OSX 10.7 and later with the prebuilt
+    # 32-bit installer on the python.org website.
+
+    # skip checks if the compiler was overridden with a CC env variable
+    if 'CC' in os.environ:
+        return _config_vars
+
+    if re.search(r'-arch\s+ppc', _config_vars['CFLAGS']) is not None:
+        # NOTE: Cannot use subprocess here because of bootstrap
+        # issues when building Python itself
+        status = os.system(
+            """echo 'int main{};' | """
+            """'%s' -c -arch ppc -x c -o /dev/null /dev/null 2>/dev/null"""
+            %(_config_vars['CC'].replace("'", "'\"'\"'"),))
+        if status:
+            # The compile failed for some reason.  Because of differences
+            # across Xcode and compiler versions, there is no reliable way
+            # to be sure why it failed.  Assume here it was due to lack of
+            # PPC support and remove the related '-arch' flags from each
+            # config variables not explicitly overridden by an environment
+            # variable.  If the error was for some other reason, we hope the
+            # failure will show up again when trying to compile an extension
+            # module.
+            for cv in _UNIVERSAL_CONFIG_VARS:
+                if cv in _config_vars and cv not in os.environ:
+                    flags = _config_vars[cv]
+                    flags = re.sub(r'-arch\s+ppc\w*\s', ' ', flags)
+                    _save_modified_value(_config_vars, cv, flags)
+
+    return _config_vars
+
+
+def _override_all_archs(_config_vars):
+    """Allow override of all archs with ARCHFLAGS env var"""
+    # NOTE: This name was introduced by Apple in OSX 10.5 and
+    # is used by several scripting languages distributed with
+    # that OS release.
+    if 'ARCHFLAGS' in os.environ:
+        arch = os.environ['ARCHFLAGS']
+        for cv in _UNIVERSAL_CONFIG_VARS:
+            if cv in _config_vars and '-arch' in _config_vars[cv]:
+                flags = _config_vars[cv]
+                flags = re.sub(r'-arch\s+\w+\s', ' ', flags)
+                flags = flags + ' ' + arch
+                _save_modified_value(_config_vars, cv, flags)
+
+    return _config_vars
+
+
+def _check_for_unavailable_sdk(_config_vars):
+    """Remove references to any SDKs not available"""
+    # If we're on OSX 10.5 or later and the user tries to
+    # compile an extension using an SDK that is not present
+    # on the current machine it is better to not use an SDK
+    # than to fail.  This is particularly important with
+    # the standalone Command Line Tools alternative to a
+    # full-blown Xcode install since the CLT packages do not
+    # provide SDKs.  If the SDK is not present, it is assumed
+    # that the header files and dev libs have been installed
+    # to /usr and /System/Library by either a standalone CLT
+    # package or the CLT component within Xcode.
+    cflags = _config_vars.get('CFLAGS', '')
+    m = re.search(r'-isysroot\s*(\S+)', cflags)
+    if m is not None:
+        sdk = m.group(1)
+        if not os.path.exists(sdk):
+            for cv in _UNIVERSAL_CONFIG_VARS:
+                # Do not alter a config var explicitly overridden by env var
+                if cv in _config_vars and cv not in os.environ:
+                    flags = _config_vars[cv]
+                    flags = re.sub(r'-isysroot\s*\S+(?:\s|$)', ' ', flags)
+                    _save_modified_value(_config_vars, cv, flags)
+
+    return _config_vars
+
+
+def compiler_fixup(compiler_so, cc_args):
+    """
+    This function will strip '-isysroot PATH' and '-arch ARCH' from the
+    compile flags if the user has specified one them in extra_compile_flags.
+
+    This is needed because '-arch ARCH' adds another architecture to the
+    build, without a way to remove an architecture. Furthermore GCC will
+    barf if multiple '-isysroot' arguments are present.
+    """
+    stripArch = stripSysroot = False
+
+    compiler_so = list(compiler_so)
+
+    if not _supports_universal_builds():
+        # OSX before 10.4.0, these don't support -arch and -isysroot at
+        # all.
+        stripArch = stripSysroot = True
+    else:
+        stripArch = '-arch' in cc_args
+        stripSysroot = any(arg for arg in cc_args if arg.startswith('-isysroot'))
+
+    if stripArch or 'ARCHFLAGS' in os.environ:
+        while True:
+            try:
+                index = compiler_so.index('-arch')
+                # Strip this argument and the next one:
+                del compiler_so[index:index+2]
+            except ValueError:
+                break
+
+    elif not _supports_arm64_builds():
+        # Look for "-arch arm64" and drop that
+        for idx in reversed(range(len(compiler_so))):
+            if compiler_so[idx] == '-arch' and compiler_so[idx+1] == "arm64":
+                del compiler_so[idx:idx+2]
+
+    if 'ARCHFLAGS' in os.environ and not stripArch:
+        # User specified different -arch flags in the environ,
+        # see also distutils.sysconfig
+        compiler_so = compiler_so + os.environ['ARCHFLAGS'].split()
+
+    if stripSysroot:
+        while True:
+            indices = [i for i,x in enumerate(compiler_so) if x.startswith('-isysroot')]
+            if not indices:
+                break
+            index = indices[0]
+            if compiler_so[index] == '-isysroot':
+                # Strip this argument and the next one:
+                del compiler_so[index:index+2]
+            else:
+                # It's '-isysroot/some/path' in one arg
+                del compiler_so[index:index+1]
+
+    # Check if the SDK that is used during compilation actually exists,
+    # the universal build requires the usage of a universal SDK and not all
+    # users have that installed by default.
+    sysroot = None
+    argvar = cc_args
+    indices = [i for i,x in enumerate(cc_args) if x.startswith('-isysroot')]
+    if not indices:
+        argvar = compiler_so
+        indices = [i for i,x in enumerate(compiler_so) if x.startswith('-isysroot')]
+
+    for idx in indices:
+        if argvar[idx] == '-isysroot':
+            sysroot = argvar[idx+1]
+            break
+        else:
+            sysroot = argvar[idx][len('-isysroot'):]
+            break
+
+    if sysroot and not os.path.isdir(sysroot):
+        sys.stderr.write(f"Compiling with an SDK that doesn't seem to exist: {sysroot}\n")
+        sys.stderr.write("Please check your Xcode installation\n")
+        sys.stderr.flush()
+
+    return compiler_so
+
+
+def customize_config_vars(_config_vars):
+    """Customize Python build configuration variables.
+
+    Called internally from sysconfig with a mutable mapping
+    containing name/value pairs parsed from the configured
+    makefile used to build this interpreter.  Returns
+    the mapping updated as needed to reflect the environment
+    in which the interpreter is running; in the case of
+    a Python from a binary installer, the installed
+    environment may be very different from the build
+    environment, i.e. different OS levels, different
+    built tools, different available CPU architectures.
+
+    This customization is performed whenever
+    distutils.sysconfig.get_config_vars() is first
+    called.  It may be used in environments where no
+    compilers are present, i.e. when installing pure
+    Python dists.  Customization of compiler paths
+    and detection of unavailable archs is deferred
+    until the first extension module build is
+    requested (in distutils.sysconfig.customize_compiler).
+
+    Currently called from distutils.sysconfig
+    """
+
+    if not _supports_universal_builds():
+        # On Mac OS X before 10.4, check if -arch and -isysroot
+        # are in CFLAGS or LDFLAGS and remove them if they are.
+        # This is needed when building extensions on a 10.3 system
+        # using a universal build of python.
+        _remove_universal_flags(_config_vars)
+
+    # Allow user to override all archs with ARCHFLAGS env var
+    _override_all_archs(_config_vars)
+
+    # Remove references to sdks that are not found
+    _check_for_unavailable_sdk(_config_vars)
+
+    return _config_vars
+
+
+def customize_compiler(_config_vars):
+    """Customize compiler path and configuration variables.
+
+    This customization is performed when the first
+    extension module build is requested
+    in distutils.sysconfig.customize_compiler.
+    """
+
+    # Find a compiler to use for extension module builds
+    _find_appropriate_compiler(_config_vars)
+
+    # Remove ppc arch flags if not supported here
+    _remove_unsupported_archs(_config_vars)
+
+    # Allow user to override all archs with ARCHFLAGS env var
+    _override_all_archs(_config_vars)
+
+    return _config_vars
+
+
+def get_platform_osx(_config_vars, osname, release, machine):
+    """Filter values for get_platform()"""
+    # called from get_platform() in sysconfig and distutils.util
+    #
+    # For our purposes, we'll assume that the system version from
+    # distutils' perspective is what MACOSX_DEPLOYMENT_TARGET is set
+    # to. This makes the compatibility story a bit more sane because the
+    # machine is going to compile and link as if it were
+    # MACOSX_DEPLOYMENT_TARGET.
+
+    macver = _config_vars.get('MACOSX_DEPLOYMENT_TARGET', '')
+    macrelease = _get_system_version() or macver
+    macver = macver or macrelease
+
+    if macver:
+        release = macver
+        osname = "macosx"
+
+        # Use the original CFLAGS value, if available, so that we
+        # return the same machine type for the platform string.
+        # Otherwise, distutils may consider this a cross-compiling
+        # case and disallow installs.
+        cflags = _config_vars.get(_INITPRE+'CFLAGS',
+                                    _config_vars.get('CFLAGS', ''))
+        if macrelease:
+            try:
+                macrelease = tuple(int(i) for i in macrelease.split('.')[0:2])
+            except ValueError:
+                macrelease = (10, 3)
+        else:
+            # assume no universal support
+            macrelease = (10, 3)
+
+        if (macrelease >= (10, 4)) and '-arch' in cflags.strip():
+            # The universal build will build fat binaries, but not on
+            # systems before 10.4
+
+            machine = 'fat'
+
+            archs = re.findall(r'-arch\s+(\S+)', cflags)
+            archs = tuple(sorted(set(archs)))
+
+            if len(archs) == 1:
+                machine = archs[0]
+            elif archs == ('arm64', 'x86_64'):
+                machine = 'universal2'
+            elif archs == ('i386', 'ppc'):
+                machine = 'fat'
+            elif archs == ('i386', 'x86_64'):
+                machine = 'intel'
+            elif archs == ('i386', 'ppc', 'x86_64'):
+                machine = 'fat3'
+            elif archs == ('ppc64', 'x86_64'):
+                machine = 'fat64'
+            elif archs == ('i386', 'ppc', 'ppc64', 'x86_64'):
+                machine = 'universal'
+            else:
+                raise ValueError(
+                   "Don't know machine value for archs=%r" % (archs,))
+
+        elif machine == 'i386':
+            # On OSX the machine type returned by uname is always the
+            # 32-bit variant, even if the executable architecture is
+            # the 64-bit variant
+            if sys.maxsize >= 2**32:
+                machine = 'x86_64'
+
+        elif machine in ('PowerPC', 'Power_Macintosh'):
+            # Pick a sane name for the PPC architecture.
+            # See 'i386' case
+            if sys.maxsize >= 2**32:
+                machine = 'ppc64'
+            else:
+                machine = 'ppc'
+
+    return (osname, release, machine)

evalkit_tf446/lib/python3.10/_py_abc.py

@@ -0,0 +1,147 @@
+from _weakrefset import WeakSet
+
+
+def get_cache_token():
+    """Returns the current ABC cache token.
+
+    The token is an opaque object (supporting equality testing) identifying the
+    current version of the ABC cache for virtual subclasses. The token changes
+    with every call to ``register()`` on any ABC.
+    """
+    return ABCMeta._abc_invalidation_counter
+
+
+class ABCMeta(type):
+    """Metaclass for defining Abstract Base Classes (ABCs).
+
+    Use this metaclass to create an ABC.  An ABC can be subclassed
+    directly, and then acts as a mix-in class.  You can also register
+    unrelated concrete classes (even built-in classes) and unrelated
+    ABCs as 'virtual subclasses' -- these and their descendants will
+    be considered subclasses of the registering ABC by the built-in
+    issubclass() function, but the registering ABC won't show up in
+    their MRO (Method Resolution Order) nor will method
+    implementations defined by the registering ABC be callable (not
+    even via super()).
+    """
+
+    # A global counter that is incremented each time a class is
+    # registered as a virtual subclass of anything.  It forces the
+    # negative cache to be cleared before its next use.
+    # Note: this counter is private. Use `abc.get_cache_token()` for
+    #       external code.
+    _abc_invalidation_counter = 0
+
+    def __new__(mcls, name, bases, namespace, /, **kwargs):
+        cls = super().__new__(mcls, name, bases, namespace, **kwargs)
+        # Compute set of abstract method names
+        abstracts = {name
+                     for name, value in namespace.items()
+                     if getattr(value, "__isabstractmethod__", False)}
+        for base in bases:
+            for name in getattr(base, "__abstractmethods__", set()):
+                value = getattr(cls, name, None)
+                if getattr(value, "__isabstractmethod__", False):
+                    abstracts.add(name)
+        cls.__abstractmethods__ = frozenset(abstracts)
+        # Set up inheritance registry
+        cls._abc_registry = WeakSet()
+        cls._abc_cache = WeakSet()
+        cls._abc_negative_cache = WeakSet()
+        cls._abc_negative_cache_version = ABCMeta._abc_invalidation_counter
+        return cls
+
+    def register(cls, subclass):
+        """Register a virtual subclass of an ABC.
+
+        Returns the subclass, to allow usage as a class decorator.
+        """
+        if not isinstance(subclass, type):
+            raise TypeError("Can only register classes")
+        if issubclass(subclass, cls):
+            return subclass  # Already a subclass
+        # Subtle: test for cycles *after* testing for "already a subclass";
+        # this means we allow X.register(X) and interpret it as a no-op.
+        if issubclass(cls, subclass):
+            # This would create a cycle, which is bad for the algorithm below
+            raise RuntimeError("Refusing to create an inheritance cycle")
+        cls._abc_registry.add(subclass)
+        ABCMeta._abc_invalidation_counter += 1  # Invalidate negative cache
+        return subclass
+
+    def _dump_registry(cls, file=None):
+        """Debug helper to print the ABC registry."""
+        print(f"Class: {cls.__module__}.{cls.__qualname__}", file=file)
+        print(f"Inv. counter: {get_cache_token()}", file=file)
+        for name in cls.__dict__:
+            if name.startswith("_abc_"):
+                value = getattr(cls, name)
+                if isinstance(value, WeakSet):
+                    value = set(value)
+                print(f"{name}: {value!r}", file=file)
+
+    def _abc_registry_clear(cls):
+        """Clear the registry (for debugging or testing)."""
+        cls._abc_registry.clear()
+
+    def _abc_caches_clear(cls):
+        """Clear the caches (for debugging or testing)."""
+        cls._abc_cache.clear()
+        cls._abc_negative_cache.clear()
+
+    def __instancecheck__(cls, instance):
+        """Override for isinstance(instance, cls)."""
+        # Inline the cache checking
+        subclass = instance.__class__
+        if subclass in cls._abc_cache:
+            return True
+        subtype = type(instance)
+        if subtype is subclass:
+            if (cls._abc_negative_cache_version ==
+                ABCMeta._abc_invalidation_counter and
+                subclass in cls._abc_negative_cache):
+                return False
+            # Fall back to the subclass check.
+            return cls.__subclasscheck__(subclass)
+        return any(cls.__subclasscheck__(c) for c in (subclass, subtype))
+
+    def __subclasscheck__(cls, subclass):
+        """Override for issubclass(subclass, cls)."""
+        if not isinstance(subclass, type):
+            raise TypeError('issubclass() arg 1 must be a class')
+        # Check cache
+        if subclass in cls._abc_cache:
+            return True
+        # Check negative cache; may have to invalidate
+        if cls._abc_negative_cache_version < ABCMeta._abc_invalidation_counter:
+            # Invalidate the negative cache
+            cls._abc_negative_cache = WeakSet()
+            cls._abc_negative_cache_version = ABCMeta._abc_invalidation_counter
+        elif subclass in cls._abc_negative_cache:
+            return False
+        # Check the subclass hook
+        ok = cls.__subclasshook__(subclass)
+        if ok is not NotImplemented:
+            assert isinstance(ok, bool)
+            if ok:
+                cls._abc_cache.add(subclass)
+            else:
+                cls._abc_negative_cache.add(subclass)
+            return ok
+        # Check if it's a direct subclass
+        if cls in getattr(subclass, '__mro__', ()):
+            cls._abc_cache.add(subclass)
+            return True
+        # Check if it's a subclass of a registered class (recursive)
+        for rcls in cls._abc_registry:
+            if issubclass(subclass, rcls):
+                cls._abc_cache.add(subclass)
+                return True
+        # Check if it's a subclass of a subclass (recursive)
+        for scls in cls.__subclasses__():
+            if issubclass(subclass, scls):
+                cls._abc_cache.add(subclass)
+                return True
+        # No dice; update negative cache
+        cls._abc_negative_cache.add(subclass)
+        return False

evalkit_tf446/lib/python3.10/_sitebuiltins.py

@@ -0,0 +1,103 @@
+"""
+The objects used by the site module to add custom builtins.
+"""
+
+# Those objects are almost immortal and they keep a reference to their module
+# globals.  Defining them in the site module would keep too many references
+# alive.
+# Note this means this module should also avoid keep things alive in its
+# globals.
+
+import sys
+
+class Quitter(object):
+    def __init__(self, name, eof):
+        self.name = name
+        self.eof = eof
+    def __repr__(self):
+        return 'Use %s() or %s to exit' % (self.name, self.eof)
+    def __call__(self, code=None):
+        # Shells like IDLE catch the SystemExit, but listen when their
+        # stdin wrapper is closed.
+        try:
+            sys.stdin.close()
+        except:
+            pass
+        raise SystemExit(code)
+
+
+class _Printer(object):
+    """interactive prompt objects for printing the license text, a list of
+    contributors and the copyright notice."""
+
+    MAXLINES = 23
+
+    def __init__(self, name, data, files=(), dirs=()):
+        import os
+        self.__name = name
+        self.__data = data
+        self.__lines = None
+        self.__filenames = [os.path.join(dir, filename)
+                            for dir in dirs
+                            for filename in files]
+
+    def __setup(self):
+        if self.__lines:
+            return
+        data = None
+        for filename in self.__filenames:
+            try:
+                with open(filename, encoding='utf-8') as fp:
+                    data = fp.read()
+                break
+            except OSError:
+                pass
+        if not data:
+            data = self.__data
+        self.__lines = data.split('\n')
+        self.__linecnt = len(self.__lines)
+
+    def __repr__(self):
+        self.__setup()
+        if len(self.__lines) <= self.MAXLINES:
+            return "\n".join(self.__lines)
+        else:
+            return "Type %s() to see the full %s text" % ((self.__name,)*2)
+
+    def __call__(self):
+        self.__setup()
+        prompt = 'Hit Return for more, or q (and Return) to quit: '
+        lineno = 0
+        while 1:
+            try:
+                for i in range(lineno, lineno + self.MAXLINES):
+                    print(self.__lines[i])
+            except IndexError:
+                break
+            else:
+                lineno += self.MAXLINES
+                key = None
+                while key is None:
+                    key = input(prompt)
+                    if key not in ('', 'q'):
+                        key = None
+                if key == 'q':
+                    break
+
+
+class _Helper(object):
+    """Define the builtin 'help'.
+
+    This is a wrapper around pydoc.help that provides a helpful message
+    when 'help' is typed at the Python interactive prompt.
+
+    Calling help() at the Python prompt starts an interactive help session.
+    Calling help(thing) prints help for the python object 'thing'.
+    """
+
+    def __repr__(self):
+        return "Type help() for interactive help, " \
+               "or help(object) for help about object."
+    def __call__(self, *args, **kwds):
+        import pydoc
+        return pydoc.help(*args, **kwds)

evalkit_tf446/lib/python3.10/_strptime.py

@@ -0,0 +1,579 @@
+"""Strptime-related classes and functions.
+
+CLASSES:
+    LocaleTime -- Discovers and stores locale-specific time information
+    TimeRE -- Creates regexes for pattern matching a string of text containing
+                time information
+
+FUNCTIONS:
+    _getlang -- Figure out what language is being used for the locale
+    strptime -- Calculates the time struct represented by the passed-in string
+
+"""
+import time
+import locale
+import calendar
+from re import compile as re_compile
+from re import IGNORECASE
+from re import escape as re_escape
+from datetime import (date as datetime_date,
+                      timedelta as datetime_timedelta,
+                      timezone as datetime_timezone)
+from _thread import allocate_lock as _thread_allocate_lock
+
+__all__ = []
+
+def _getlang():
+    # Figure out what the current language is set to.
+    return locale.getlocale(locale.LC_TIME)
+
+class LocaleTime(object):
+    """Stores and handles locale-specific information related to time.
+
+    ATTRIBUTES:
+        f_weekday -- full weekday names (7-item list)
+        a_weekday -- abbreviated weekday names (7-item list)
+        f_month -- full month names (13-item list; dummy value in [0], which
+                    is added by code)
+        a_month -- abbreviated month names (13-item list, dummy value in
+                    [0], which is added by code)
+        am_pm -- AM/PM representation (2-item list)
+        LC_date_time -- format string for date/time representation (string)
+        LC_date -- format string for date representation (string)
+        LC_time -- format string for time representation (string)
+        timezone -- daylight- and non-daylight-savings timezone representation
+                    (2-item list of sets)
+        lang -- Language used by instance (2-item tuple)
+    """
+
+    def __init__(self):
+        """Set all attributes.
+
+        Order of methods called matters for dependency reasons.
+
+        The locale language is set at the offset and then checked again before
+        exiting.  This is to make sure that the attributes were not set with a
+        mix of information from more than one locale.  This would most likely
+        happen when using threads where one thread calls a locale-dependent
+        function while another thread changes the locale while the function in
+        the other thread is still running.  Proper coding would call for
+        locks to prevent changing the locale while locale-dependent code is
+        running.  The check here is done in case someone does not think about
+        doing this.
+
+        Only other possible issue is if someone changed the timezone and did
+        not call tz.tzset .  That is an issue for the programmer, though,
+        since changing the timezone is worthless without that call.
+
+        """
+        self.lang = _getlang()
+        self.__calc_weekday()
+        self.__calc_month()
+        self.__calc_am_pm()
+        self.__calc_timezone()
+        self.__calc_date_time()
+        if _getlang() != self.lang:
+            raise ValueError("locale changed during initialization")
+        if time.tzname != self.tzname or time.daylight != self.daylight:
+            raise ValueError("timezone changed during initialization")
+
+    def __calc_weekday(self):
+        # Set self.a_weekday and self.f_weekday using the calendar
+        # module.
+        a_weekday = [calendar.day_abbr[i].lower() for i in range(7)]
+        f_weekday = [calendar.day_name[i].lower() for i in range(7)]
+        self.a_weekday = a_weekday
+        self.f_weekday = f_weekday
+
+    def __calc_month(self):
+        # Set self.f_month and self.a_month using the calendar module.
+        a_month = [calendar.month_abbr[i].lower() for i in range(13)]
+        f_month = [calendar.month_name[i].lower() for i in range(13)]
+        self.a_month = a_month
+        self.f_month = f_month
+
+    def __calc_am_pm(self):
+        # Set self.am_pm by using time.strftime().
+
+        # The magic date (1999,3,17,hour,44,55,2,76,0) is not really that
+        # magical; just happened to have used it everywhere else where a
+        # static date was needed.
+        am_pm = []
+        for hour in (1, 22):
+            time_tuple = time.struct_time((1999,3,17,hour,44,55,2,76,0))
+            am_pm.append(time.strftime("%p", time_tuple).lower())
+        self.am_pm = am_pm
+
+    def __calc_date_time(self):
+        # Set self.date_time, self.date, & self.time by using
+        # time.strftime().
+
+        # Use (1999,3,17,22,44,55,2,76,0) for magic date because the amount of
+        # overloaded numbers is minimized.  The order in which searches for
+        # values within the format string is very important; it eliminates
+        # possible ambiguity for what something represents.
+        time_tuple = time.struct_time((1999,3,17,22,44,55,2,76,0))
+        date_time = [None, None, None]
+        date_time[0] = time.strftime("%c", time_tuple).lower()
+        date_time[1] = time.strftime("%x", time_tuple).lower()
+        date_time[2] = time.strftime("%X", time_tuple).lower()
+        replacement_pairs = [('%', '%%'), (self.f_weekday[2], '%A'),
+                    (self.f_month[3], '%B'), (self.a_weekday[2], '%a'),
+                    (self.a_month[3], '%b'), (self.am_pm[1], '%p'),
+                    ('1999', '%Y'), ('99', '%y'), ('22', '%H'),
+                    ('44', '%M'), ('55', '%S'), ('76', '%j'),
+                    ('17', '%d'), ('03', '%m'), ('3', '%m'),
+                    # '3' needed for when no leading zero.
+                    ('2', '%w'), ('10', '%I')]
+        replacement_pairs.extend([(tz, "%Z") for tz_values in self.timezone
+                                                for tz in tz_values])
+        for offset,directive in ((0,'%c'), (1,'%x'), (2,'%X')):
+            current_format = date_time[offset]
+            for old, new in replacement_pairs:
+                # Must deal with possible lack of locale info
+                # manifesting itself as the empty string (e.g., Swedish's
+                # lack of AM/PM info) or a platform returning a tuple of empty
+                # strings (e.g., MacOS 9 having timezone as ('','')).
+                if old:
+                    current_format = current_format.replace(old, new)
+            # If %W is used, then Sunday, 2005-01-03 will fall on week 0 since
+            # 2005-01-03 occurs before the first Monday of the year.  Otherwise
+            # %U is used.
+            time_tuple = time.struct_time((1999,1,3,1,1,1,6,3,0))
+            if '00' in time.strftime(directive, time_tuple):
+                U_W = '%W'
+            else:
+                U_W = '%U'
+            date_time[offset] = current_format.replace('11', U_W)
+        self.LC_date_time = date_time[0]
+        self.LC_date = date_time[1]
+        self.LC_time = date_time[2]
+
+    def __calc_timezone(self):
+        # Set self.timezone by using time.tzname.
+        # Do not worry about possibility of time.tzname[0] == time.tzname[1]
+        # and time.daylight; handle that in strptime.
+        try:
+            time.tzset()
+        except AttributeError:
+            pass
+        self.tzname = time.tzname
+        self.daylight = time.daylight
+        no_saving = frozenset({"utc", "gmt", self.tzname[0].lower()})
+        if self.daylight:
+            has_saving = frozenset({self.tzname[1].lower()})
+        else:
+            has_saving = frozenset()
+        self.timezone = (no_saving, has_saving)
+
+
+class TimeRE(dict):
+    """Handle conversion from format directives to regexes."""
+
+    def __init__(self, locale_time=None):
+        """Create keys/values.
+
+        Order of execution is important for dependency reasons.
+
+        """
+        if locale_time:
+            self.locale_time = locale_time
+        else:
+            self.locale_time = LocaleTime()
+        base = super()
+        base.__init__({
+            # The " [1-9]" part of the regex is to make %c from ANSI C work
+            'd': r"(?P<d>3[0-1]|[1-2]\d|0[1-9]|[1-9]| [1-9])",
+            'f': r"(?P<f>[0-9]{1,6})",
+            'H': r"(?P<H>2[0-3]|[0-1]\d|\d)",
+            'I': r"(?P<I>1[0-2]|0[1-9]|[1-9])",
+            'G': r"(?P<G>\d\d\d\d)",
+            'j': r"(?P<j>36[0-6]|3[0-5]\d|[1-2]\d\d|0[1-9]\d|00[1-9]|[1-9]\d|0[1-9]|[1-9])",
+            'm': r"(?P<m>1[0-2]|0[1-9]|[1-9])",
+            'M': r"(?P<M>[0-5]\d|\d)",
+            'S': r"(?P<S>6[0-1]|[0-5]\d|\d)",
+            'U': r"(?P<U>5[0-3]|[0-4]\d|\d)",
+            'w': r"(?P<w>[0-6])",
+            'u': r"(?P<u>[1-7])",
+            'V': r"(?P<V>5[0-3]|0[1-9]|[1-4]\d|\d)",
+            # W is set below by using 'U'
+            'y': r"(?P<y>\d\d)",
+            #XXX: Does 'Y' need to worry about having less or more than
+            #     4 digits?
+            'Y': r"(?P<Y>\d\d\d\d)",
+            'z': r"(?P<z>[+-]\d\d:?[0-5]\d(:?[0-5]\d(\.\d{1,6})?)?|(?-i:Z))",
+            'A': self.__seqToRE(self.locale_time.f_weekday, 'A'),
+            'a': self.__seqToRE(self.locale_time.a_weekday, 'a'),
+            'B': self.__seqToRE(self.locale_time.f_month[1:], 'B'),
+            'b': self.__seqToRE(self.locale_time.a_month[1:], 'b'),
+            'p': self.__seqToRE(self.locale_time.am_pm, 'p'),
+            'Z': self.__seqToRE((tz for tz_names in self.locale_time.timezone
+                                        for tz in tz_names),
+                                'Z'),
+            '%': '%'})
+        base.__setitem__('W', base.__getitem__('U').replace('U', 'W'))
+        base.__setitem__('c', self.pattern(self.locale_time.LC_date_time))
+        base.__setitem__('x', self.pattern(self.locale_time.LC_date))
+        base.__setitem__('X', self.pattern(self.locale_time.LC_time))
+
+    def __seqToRE(self, to_convert, directive):
+        """Convert a list to a regex string for matching a directive.
+
+        Want possible matching values to be from longest to shortest.  This
+        prevents the possibility of a match occurring for a value that also
+        a substring of a larger value that should have matched (e.g., 'abc'
+        matching when 'abcdef' should have been the match).
+
+        """
+        to_convert = sorted(to_convert, key=len, reverse=True)
+        for value in to_convert:
+            if value != '':
+                break
+        else:
+            return ''
+        regex = '|'.join(re_escape(stuff) for stuff in to_convert)
+        regex = '(?P<%s>%s' % (directive, regex)
+        return '%s)' % regex
+
+    def pattern(self, format):
+        """Return regex pattern for the format string.
+
+        Need to make sure that any characters that might be interpreted as
+        regex syntax are escaped.
+
+        """
+        processed_format = ''
+        # The sub() call escapes all characters that might be misconstrued
+        # as regex syntax.  Cannot use re.escape since we have to deal with
+        # format directives (%m, etc.).
+        regex_chars = re_compile(r"([\\.^$*+?\(\){}\[\]|])")
+        format = regex_chars.sub(r"\\\1", format)
+        whitespace_replacement = re_compile(r'\s+')
+        format = whitespace_replacement.sub(r'\\s+', format)
+        while '%' in format:
+            directive_index = format.index('%')+1
+            processed_format = "%s%s%s" % (processed_format,
+                                           format[:directive_index-1],
+                                           self[format[directive_index]])
+            format = format[directive_index+1:]
+        return "%s%s" % (processed_format, format)
+
+    def compile(self, format):
+        """Return a compiled re object for the format string."""
+        return re_compile(self.pattern(format), IGNORECASE)
+
+_cache_lock = _thread_allocate_lock()
+# DO NOT modify _TimeRE_cache or _regex_cache without acquiring the cache lock
+# first!
+_TimeRE_cache = TimeRE()
+_CACHE_MAX_SIZE = 5 # Max number of regexes stored in _regex_cache
+_regex_cache = {}
+
+def _calc_julian_from_U_or_W(year, week_of_year, day_of_week, week_starts_Mon):
+    """Calculate the Julian day based on the year, week of the year, and day of
+    the week, with week_start_day representing whether the week of the year
+    assumes the week starts on Sunday or Monday (6 or 0)."""
+    first_weekday = datetime_date(year, 1, 1).weekday()
+    # If we are dealing with the %U directive (week starts on Sunday), it's
+    # easier to just shift the view to Sunday being the first day of the
+    # week.
+    if not week_starts_Mon:
+        first_weekday = (first_weekday + 1) % 7
+        day_of_week = (day_of_week + 1) % 7
+    # Need to watch out for a week 0 (when the first day of the year is not
+    # the same as that specified by %U or %W).
+    week_0_length = (7 - first_weekday) % 7
+    if week_of_year == 0:
+        return 1 + day_of_week - first_weekday
+    else:
+        days_to_week = week_0_length + (7 * (week_of_year - 1))
+        return 1 + days_to_week + day_of_week
+
+
+def _calc_julian_from_V(iso_year, iso_week, iso_weekday):
+    """Calculate the Julian day based on the ISO 8601 year, week, and weekday.
+    ISO weeks start on Mondays, with week 01 being the week containing 4 Jan.
+    ISO week days range from 1 (Monday) to 7 (Sunday).
+    """
+    correction = datetime_date(iso_year, 1, 4).isoweekday() + 3
+    ordinal = (iso_week * 7) + iso_weekday - correction
+    # ordinal may be negative or 0 now, which means the date is in the previous
+    # calendar year
+    if ordinal < 1:
+        ordinal += datetime_date(iso_year, 1, 1).toordinal()
+        iso_year -= 1
+        ordinal -= datetime_date(iso_year, 1, 1).toordinal()
+    return iso_year, ordinal
+
+
+def _strptime(data_string, format="%a %b %d %H:%M:%S %Y"):
+    """Return a 2-tuple consisting of a time struct and an int containing
+    the number of microseconds based on the input string and the
+    format string."""
+
+    for index, arg in enumerate([data_string, format]):
+        if not isinstance(arg, str):
+            msg = "strptime() argument {} must be str, not {}"
+            raise TypeError(msg.format(index, type(arg)))
+
+    global _TimeRE_cache, _regex_cache
+    with _cache_lock:
+        locale_time = _TimeRE_cache.locale_time
+        if (_getlang() != locale_time.lang or
+            time.tzname != locale_time.tzname or
+            time.daylight != locale_time.daylight):
+            _TimeRE_cache = TimeRE()
+            _regex_cache.clear()
+            locale_time = _TimeRE_cache.locale_time
+        if len(_regex_cache) > _CACHE_MAX_SIZE:
+            _regex_cache.clear()
+        format_regex = _regex_cache.get(format)
+        if not format_regex:
+            try:
+                format_regex = _TimeRE_cache.compile(format)
+            # KeyError raised when a bad format is found; can be specified as
+            # \\, in which case it was a stray % but with a space after it
+            except KeyError as err:
+                bad_directive = err.args[0]
+                if bad_directive == "\\":
+                    bad_directive = "%"
+                del err
+                raise ValueError("'%s' is a bad directive in format '%s'" %
+                                    (bad_directive, format)) from None
+            # IndexError only occurs when the format string is "%"
+            except IndexError:
+                raise ValueError("stray %% in format '%s'" % format) from None
+            _regex_cache[format] = format_regex
+    found = format_regex.match(data_string)
+    if not found:
+        raise ValueError("time data %r does not match format %r" %
+                         (data_string, format))
+    if len(data_string) != found.end():
+        raise ValueError("unconverted data remains: %s" %
+                          data_string[found.end():])
+
+    iso_year = year = None
+    month = day = 1
+    hour = minute = second = fraction = 0
+    tz = -1
+    gmtoff = None
+    gmtoff_fraction = 0
+    # Default to -1 to signify that values not known; not critical to have,
+    # though
+    iso_week = week_of_year = None
+    week_of_year_start = None
+    # weekday and julian defaulted to None so as to signal need to calculate
+    # values
+    weekday = julian = None
+    found_dict = found.groupdict()
+    for group_key in found_dict.keys():
+        # Directives not explicitly handled below:
+        #   c, x, X
+        #      handled by making out of other directives
+        #   U, W
+        #      worthless without day of the week
+        if group_key == 'y':
+            year = int(found_dict['y'])
+            # Open Group specification for strptime() states that a %y
+            #value in the range of [00, 68] is in the century 2000, while
+            #[69,99] is in the century 1900
+            if year <= 68:
+                year += 2000
+            else:
+                year += 1900
+        elif group_key == 'Y':
+            year = int(found_dict['Y'])
+        elif group_key == 'G':
+            iso_year = int(found_dict['G'])
+        elif group_key == 'm':
+            month = int(found_dict['m'])
+        elif group_key == 'B':
+            month = locale_time.f_month.index(found_dict['B'].lower())
+        elif group_key == 'b':
+            month = locale_time.a_month.index(found_dict['b'].lower())
+        elif group_key == 'd':
+            day = int(found_dict['d'])
+        elif group_key == 'H':
+            hour = int(found_dict['H'])
+        elif group_key == 'I':
+            hour = int(found_dict['I'])
+            ampm = found_dict.get('p', '').lower()
+            # If there was no AM/PM indicator, we'll treat this like AM
+            if ampm in ('', locale_time.am_pm[0]):
+                # We're in AM so the hour is correct unless we're
+                # looking at 12 midnight.
+                # 12 midnight == 12 AM == hour 0
+                if hour == 12:
+                    hour = 0
+            elif ampm == locale_time.am_pm[1]:
+                # We're in PM so we need to add 12 to the hour unless
+                # we're looking at 12 noon.
+                # 12 noon == 12 PM == hour 12
+                if hour != 12:
+                    hour += 12
+        elif group_key == 'M':
+            minute = int(found_dict['M'])
+        elif group_key == 'S':
+            second = int(found_dict['S'])
+        elif group_key == 'f':
+            s = found_dict['f']
+            # Pad to always return microseconds.
+            s += "0" * (6 - len(s))
+            fraction = int(s)
+        elif group_key == 'A':
+            weekday = locale_time.f_weekday.index(found_dict['A'].lower())
+        elif group_key == 'a':
+            weekday = locale_time.a_weekday.index(found_dict['a'].lower())
+        elif group_key == 'w':
+            weekday = int(found_dict['w'])
+            if weekday == 0:
+                weekday = 6
+            else:
+                weekday -= 1
+        elif group_key == 'u':
+            weekday = int(found_dict['u'])
+            weekday -= 1
+        elif group_key == 'j':
+            julian = int(found_dict['j'])
+        elif group_key in ('U', 'W'):
+            week_of_year = int(found_dict[group_key])
+            if group_key == 'U':
+                # U starts week on Sunday.
+                week_of_year_start = 6
+            else:
+                # W starts week on Monday.
+                week_of_year_start = 0
+        elif group_key == 'V':
+            iso_week = int(found_dict['V'])
+        elif group_key == 'z':
+            z = found_dict['z']
+            if z == 'Z':
+                gmtoff = 0
+            else:
+                if z[3] == ':':
+                    z = z[:3] + z[4:]
+                    if len(z) > 5:
+                        if z[5] != ':':
+                            msg = f"Inconsistent use of : in {found_dict['z']}"
+                            raise ValueError(msg)
+                        z = z[:5] + z[6:]
+                hours = int(z[1:3])
+                minutes = int(z[3:5])
+                seconds = int(z[5:7] or 0)
+                gmtoff = (hours * 60 * 60) + (minutes * 60) + seconds
+                gmtoff_remainder = z[8:]
+                # Pad to always return microseconds.
+                gmtoff_remainder_padding = "0" * (6 - len(gmtoff_remainder))
+                gmtoff_fraction = int(gmtoff_remainder + gmtoff_remainder_padding)
+                if z.startswith("-"):
+                    gmtoff = -gmtoff
+                    gmtoff_fraction = -gmtoff_fraction
+        elif group_key == 'Z':
+            # Since -1 is default value only need to worry about setting tz if
+            # it can be something other than -1.
+            found_zone = found_dict['Z'].lower()
+            for value, tz_values in enumerate(locale_time.timezone):
+                if found_zone in tz_values:
+                    # Deal with bad locale setup where timezone names are the
+                    # same and yet time.daylight is true; too ambiguous to
+                    # be able to tell what timezone has daylight savings
+                    if (time.tzname[0] == time.tzname[1] and
+                       time.daylight and found_zone not in ("utc", "gmt")):
+                        break
+                    else:
+                        tz = value
+                        break
+    # Deal with the cases where ambiguities arize
+    # don't assume default values for ISO week/year
+    if year is None and iso_year is not None:
+        if iso_week is None or weekday is None:
+            raise ValueError("ISO year directive '%G' must be used with "
+                             "the ISO week directive '%V' and a weekday "
+                             "directive ('%A', '%a', '%w', or '%u').")
+        if julian is not None:
+            raise ValueError("Day of the year directive '%j' is not "
+                             "compatible with ISO year directive '%G'. "
+                             "Use '%Y' instead.")
+    elif week_of_year is None and iso_week is not None:
+        if weekday is None:
+            raise ValueError("ISO week directive '%V' must be used with "
+                             "the ISO year directive '%G' and a weekday "
+                             "directive ('%A', '%a', '%w', or '%u').")
+        else:
+            raise ValueError("ISO week directive '%V' is incompatible with "
+                             "the year directive '%Y'. Use the ISO year '%G' "
+                             "instead.")
+
+    leap_year_fix = False
+    if year is None and month == 2 and day == 29:
+        year = 1904  # 1904 is first leap year of 20th century
+        leap_year_fix = True
+    elif year is None:
+        year = 1900
+
+
+    # If we know the week of the year and what day of that week, we can figure
+    # out the Julian day of the year.
+    if julian is None and weekday is not None:
+        if week_of_year is not None:
+            week_starts_Mon = True if week_of_year_start == 0 else False
+            julian = _calc_julian_from_U_or_W(year, week_of_year, weekday,
+                                                week_starts_Mon)
+        elif iso_year is not None and iso_week is not None:
+            year, julian = _calc_julian_from_V(iso_year, iso_week, weekday + 1)
+        if julian is not None and julian <= 0:
+            year -= 1
+            yday = 366 if calendar.isleap(year) else 365
+            julian += yday
+
+    if julian is None:
+        # Cannot pre-calculate datetime_date() since can change in Julian
+        # calculation and thus could have different value for the day of
+        # the week calculation.
+        # Need to add 1 to result since first day of the year is 1, not 0.
+        julian = datetime_date(year, month, day).toordinal() - \
+                  datetime_date(year, 1, 1).toordinal() + 1
+    else:  # Assume that if they bothered to include Julian day (or if it was
+           # calculated above with year/week/weekday) it will be accurate.
+        datetime_result = datetime_date.fromordinal(
+                            (julian - 1) +
+                            datetime_date(year, 1, 1).toordinal())
+        year = datetime_result.year
+        month = datetime_result.month
+        day = datetime_result.day
+    if weekday is None:
+        weekday = datetime_date(year, month, day).weekday()
+    # Add timezone info
+    tzname = found_dict.get("Z")
+
+    if leap_year_fix:
+        # the caller didn't supply a year but asked for Feb 29th. We couldn't
+        # use the default of 1900 for computations. We set it back to ensure
+        # that February 29th is smaller than March 1st.
+        year = 1900
+
+    return (year, month, day,
+            hour, minute, second,
+            weekday, julian, tz, tzname, gmtoff), fraction, gmtoff_fraction
+
+def _strptime_time(data_string, format="%a %b %d %H:%M:%S %Y"):
+    """Return a time struct based on the input string and the
+    format string."""
+    tt = _strptime(data_string, format)[0]
+    return time.struct_time(tt[:time._STRUCT_TM_ITEMS])
+
+def _strptime_datetime(cls, data_string, format="%a %b %d %H:%M:%S %Y"):
+    """Return a class cls instance based on the input string and the
+    format string."""
+    tt, fraction, gmtoff_fraction = _strptime(data_string, format)
+    tzname, gmtoff = tt[-2:]
+    args = tt[:6] + (fraction,)
+    if gmtoff is not None:
+        tzdelta = datetime_timedelta(seconds=gmtoff, microseconds=gmtoff_fraction)
+        if tzname:
+            tz = datetime_timezone(tzdelta, tzname)
+        else:
+            tz = datetime_timezone(tzdelta)
+        args += (tz,)
+
+    return cls(*args)

evalkit_tf446/lib/python3.10/_sysconfigdata__linux_x86_64-linux-gnu.py

@@ -0,0 +1,986 @@
+# system configuration generated and used by the sysconfig module
+build_time_vars = {'ABIFLAGS': '',
+ 'AC_APPLE_UNIVERSAL_BUILD': 0,
+ 'AIX_BUILDDATE': 0,
+ 'AIX_GENUINE_CPLUSPLUS': 0,
+ 'ALIGNOF_LONG': 8,
+ 'ALIGNOF_SIZE_T': 8,
+ 'ALT_SOABI': 0,
+ 'ANDROID_API_LEVEL': 0,
+ 'AR': 'ar',
+ 'ARFLAGS': 'rcs',
+ 'BASECFLAGS': '-Wno-unused-result -Wsign-compare',
+ 'BASECPPFLAGS': '-IObjects -IInclude -IPython',
+ 'BASEMODLIBS': '',
+ 'BINDIR': '/root/envs/evalkit_tf446/bin',
+ 'BINLIBDEST': '/root/envs/evalkit_tf446/lib/python3.10',
+ 'BLDLIBRARY': 'libpython3.10.a',
+ 'BLDSHARED': 'gcc -pthread -B /root/envs/evalkit_tf446/compiler_compat -shared  '
+              ''
+              ''
+              '-Wl,-rpath,/root/envs/evalkit_tf446/lib '
+              '-Wl,-rpath-link,/root/envs/evalkit_tf446/lib '
+              '-L/root/envs/evalkit_tf446/lib '
+              ''
+              ''
+              '-Wl,-rpath,/root/envs/evalkit_tf446/lib '
+              '-Wl,-rpath-link,/root/envs/evalkit_tf446/lib '
+              '-L/root/envs/evalkit_tf446/lib',
+ 'BUILDEXE': '',
+ 'BUILDPYTHON': 'python',
+ 'BUILD_GNU_TYPE': 'x86_64-conda_cos6-linux-gnu',
+ 'BYTESTR_DEPS': '\\',
+ 'CC': 'gcc -pthread -B /root/envs/evalkit_tf446/compiler_compat',
+ 'CCSHARED': '-fPIC',
+ 'CFLAGS': '-Wno-unused-result -Wsign-compare -DNDEBUG -fwrapv -O2 -Wall '
+           '-fPIC '
+           '-O2   '
+           '-isystem '
+           '/root/envs/evalkit_tf446/include '
+           ''
+           ''
+           ''
+           '-fPIC '
+           '-O2   '
+           '-isystem '
+           '/root/envs/evalkit_tf446/include '
+           ''
+           ''
+           '',
+ 'CFLAGSFORSHARED': '',
+ 'CFLAGS_ALIASING': '',
+ 'CONFIGFILES': 'configure configure.ac acconfig.h pyconfig.h.in '
+                'Makefile.pre.in',
+ 'CONFIGURE_CFLAGS': '-fPIC '
+                     '-O2 '
+                     '-isystem '
+                     '/root/envs/evalkit_tf446/include '
+                     ''
+                     ''
+                     ''
+                     '',
+ 'CONFIGURE_CFLAGS_NODIST': '-fno-semantic-interposition  '
+                            ''
+                            '-g -std=c99 -Wextra '
+                            '-Wno-unused-result -Wno-unused-parameter '
+                            '-Wno-missing-field-initializers '
+                            '-Werror=implicit-function-declaration '
+                            '-fvisibility=hidden',
+ 'CONFIGURE_CPPFLAGS': '-DNDEBUG -D_FORTIFY_SOURCE=2 -O2 -isystem '
+                       '/root/envs/evalkit_tf446/include '
+                       '-I/root/envs/evalkit_tf446/include',
+ 'CONFIGURE_LDFLAGS': ''
+                      ''
+                      '-Wl,-rpath,/root/envs/evalkit_tf446/lib '
+                      '-Wl,-rpath-link,/root/envs/evalkit_tf446/lib '
+                      '-L/root/envs/evalkit_tf446/lib',
+ 'CONFIGURE_LDFLAGS_NODIST': '-fno-semantic-interposition  '
+                             ''
+                             '-g',
+ 'CONFIG_ARGS': "'--prefix=/root/envs/evalkit_tf446'"
+                "'--build=x86_64-conda_cos6-linux-gnu'"
+                "'--host=x86_64-conda_cos6-linux-gnu''--enable-ipv6'"
+                "'--with-ensurepip=no'"
+                "'--with-tzpath=/root/envs/evalkit_tf446/share/zoneinfo:/root/envs/evalkit_tf446/share/tzinfo'"
+                "'--with-computed-gotos''--with-system-ffi'"
+                "'--enable-loadable-sqlite-extensions'"
+                "'--with-tcltk-includes=-I/root/envs/evalkit_tf446/include'"
+                "'--with-tcltk-libs=-L/root/envs/evalkit_tf446/lib "
+                "-ltcl8.6 -ltk8.6''--with-platlibdir=lib''--with-lto'"
+                "'--enable-optimizations'"
+                "'-oldincludedir=/croot/python-split_1733933809325/_build_env/x86_64-conda_cos6-linux-gnu/sysroot/usr/include'"
+                "'--disable-shared''PROFILE_TASK=-m test --pgo'"
+                "'build_alias=x86_64-conda_cos6-linux-gnu'"
+                "'host_alias=x86_64-conda_cos6-linux-gnu''MACHDEP=linux'"
+                "'CC=gcc''CFLAGS= "
+                '-fPIC '
+                '-O2  '
+                '-isystem '
+                '/root/envs/evalkit_tf446/include '
+                ''
+                ''
+                ''
+                "''LDFLAGS=   "
+                ''
+                ''
+                '-Wl,-rpath,/root/envs/evalkit_tf446/lib '
+                '-Wl,-rpath-link,/root/envs/evalkit_tf446/lib '
+                "-L/root/envs/evalkit_tf446/lib'"
+                "'CPPFLAGS=-DNDEBUG -D_FORTIFY_SOURCE=2 -O2 -isystem "
+                '/root/envs/evalkit_tf446/include '
+                "-I/root/envs/evalkit_tf446/include'"
+                "'CPP=/croot/python-split_1733933809325/_build_env/bin/cpp'"
+                "'PKG_CONFIG_PATH=/root/envs/evalkit_tf446/lib/pkgconfig'",
+ 'CONFINCLUDEDIR': '/root/envs/evalkit_tf446/include',
+ 'CONFINCLUDEPY': '/root/envs/evalkit_tf446/include/python3.10',
+ 'COREPYTHONPATH': '',
+ 'COVERAGE_INFO': '/croot/python-split_1733933809325/work/build-static/coverage.info',
+ 'COVERAGE_REPORT': '/croot/python-split_1733933809325/work/build-static/lcov-report',
+ 'COVERAGE_REPORT_OPTIONS': '--no-branch-coverage --title "CPython lcov '
+                            'report"',
+ 'CPPFLAGS': '-IObjects -IInclude -IPython -I. '
+             '-I/croot/python-split_1733933809325/work/Include -DNDEBUG '
+             '-D_FORTIFY_SOURCE=2 -O2 -isystem '
+             '/root/envs/evalkit_tf446/include '
+             '-I/root/envs/evalkit_tf446/include '
+             '-DNDEBUG -D_FORTIFY_SOURCE=2 -O2 -isystem '
+             '/root/envs/evalkit_tf446/include '
+             '-I/root/envs/evalkit_tf446/include',
+ 'CXX': 'g++ -pthread -B /root/envs/evalkit_tf446/compiler_compat',
+ 'DESTDIRS': '/root/envs/evalkit_tf446 '
+             '/root/envs/evalkit_tf446/lib '
+             '/root/envs/evalkit_tf446/lib/python3.10 '
+             '/root/envs/evalkit_tf446/lib/python3.10/lib-dynload',
+ 'DESTLIB': '/root/envs/evalkit_tf446/lib/python3.10',
+ 'DESTPATH': '',
+ 'DESTSHARED': '/root/envs/evalkit_tf446/lib/python3.10/lib-dynload',
+ 'DFLAGS': '',
+ 'DIRMODE': 755,
+ 'DIST': 'README.rst ChangeLog configure configure.ac acconfig.h pyconfig.h.in '
+         'Makefile.pre.in Include Lib Misc Ext-dummy',
+ 'DISTDIRS': 'Include Lib Misc Ext-dummy',
+ 'DISTFILES': 'README.rst ChangeLog configure configure.ac acconfig.h '
+              'pyconfig.h.in Makefile.pre.in',
+ 'DLINCLDIR': '.',
+ 'DLLLIBRARY': '',
+ 'DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754': 0,
+ 'DOUBLE_IS_BIG_ENDIAN_IEEE754': 0,
+ 'DOUBLE_IS_LITTLE_ENDIAN_IEEE754': 1,
+ 'DTRACE': '',
+ 'DTRACE_DEPS': '\\',
+ 'DTRACE_HEADERS': '',
+ 'DTRACE_OBJS': '',
+ 'DYNLOADFILE': 'dynload_shlib.o',
+ 'ENABLE_IPV6': 1,
+ 'ENSUREPIP': 'no',
+ 'EXE': '',
+ 'EXEMODE': 755,
+ 'EXPERIMENTAL_ISOLATED_SUBINTERPRETERS': 0,
+ 'EXPORTSFROM': '',
+ 'EXPORTSYMS': '',
+ 'EXTRATESTOPTS': '',
+ 'EXT_SUFFIX': '.cpython-310-x86_64-linux-gnu.so',
+ 'FILEMODE': 644,
+ 'FLOAT_WORDS_BIGENDIAN': 0,
+ 'FLOCK_NEEDS_LIBBSD': 0,
+ 'GETPGRP_HAVE_ARG': 0,
+ 'GITBRANCH': '',
+ 'GITTAG': '',
+ 'GITVERSION': '',
+ 'GNULD': 'no',
+ 'HAVE_ACCEPT4': 1,
+ 'HAVE_ACOSH': 1,
+ 'HAVE_ADDRINFO': 1,
+ 'HAVE_ALARM': 1,
+ 'HAVE_ALIGNED_REQUIRED': 0,
+ 'HAVE_ALLOCA_H': 1,
+ 'HAVE_ALTZONE': 0,
+ 'HAVE_ASINH': 1,
+ 'HAVE_ASM_TYPES_H': 1,
+ 'HAVE_ATANH': 1,
+ 'HAVE_BIND_TEXTDOMAIN_CODESET': 1,
+ 'HAVE_BLUETOOTH_BLUETOOTH_H': 0,
+ 'HAVE_BLUETOOTH_H': 0,
+ 'HAVE_BROKEN_MBSTOWCS': 0,
+ 'HAVE_BROKEN_NICE': 0,
+ 'HAVE_BROKEN_PIPE_BUF': 0,
+ 'HAVE_BROKEN_POLL': 0,
+ 'HAVE_BROKEN_POSIX_SEMAPHORES': 0,
+ 'HAVE_BROKEN_PTHREAD_SIGMASK': 0,
+ 'HAVE_BROKEN_SEM_GETVALUE': 0,
+ 'HAVE_BROKEN_UNSETENV': 0,
+ 'HAVE_BUILTIN_ATOMIC': 1,
+ 'HAVE_CHFLAGS': 0,
+ 'HAVE_CHOWN': 1,
+ 'HAVE_CHROOT': 1,
+ 'HAVE_CLOCK': 1,
+ 'HAVE_CLOCK_GETRES': 1,
+ 'HAVE_CLOCK_GETTIME': 1,
+ 'HAVE_CLOCK_SETTIME': 1,
+ 'HAVE_CLOSE_RANGE': 0,
+ 'HAVE_COMPUTED_GOTOS': 1,
+ 'HAVE_CONFSTR': 1,
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+ 'HAVE_COPY_FILE_RANGE': 0,
+ 'HAVE_CRYPT_H': 1,
+ 'HAVE_CRYPT_R': 1,
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+ 'TIME_WITH_SYS_TIME': 1,
+ 'TM_IN_SYS_TIME': 0,
+ 'TZPATH': '/root/envs/evalkit_tf446/share/zoneinfo',
+ 'UNICODE_DEPS': '\\',
+ 'UNIVERSALSDK': '',
+ 'UPDATE_FILE': '/croot/python-split_1733933809325/work/Tools/scripts/update_file.py',
+ 'USE_COMPUTED_GOTOS': 1,
+ 'VERSION': '3.10',
+ 'VPATH': '/croot/python-split_1733933809325/work',
+ 'WHEEL_PKG_DIR': '',
+ 'WINDOW_HAS_FLAGS': 1,
+ 'WITH_DECIMAL_CONTEXTVAR': 1,
+ 'WITH_DOC_STRINGS': 1,
+ 'WITH_DTRACE': 0,
+ 'WITH_DYLD': 0,
+ 'WITH_EDITLINE': 0,
+ 'WITH_LIBINTL': 0,
+ 'WITH_NEXT_FRAMEWORK': 0,
+ 'WITH_PYMALLOC': 1,
+ 'WITH_VALGRIND': 0,
+ 'X87_DOUBLE_ROUNDING': 0,
+ 'XMLLIBSUBDIRS': 'xml xml/dom xml/etree xml/parsers xml/sax',
+ 'abs_builddir': '/croot/python-split_1733933809325/work/build-static',
+ 'abs_srcdir': '/croot/python-split_1733933809325/work',
+ 'datarootdir': '/root/envs/evalkit_tf446/share',
+ 'exec_prefix': '/root/envs/evalkit_tf446',
+ 'prefix': '/root/envs/evalkit_tf446',
+ 'srcdir': '/croot/python-split_1733933809325/work'}

evalkit_tf446/lib/python3.10/_sysconfigdata_x86_64_conda_cos6_linux_gnu.py

@@ -0,0 +1,986 @@
+# system configuration generated and used by the sysconfig module
+build_time_vars = {'ABIFLAGS': '',
+ 'AC_APPLE_UNIVERSAL_BUILD': 0,
+ 'AIX_BUILDDATE': 0,
+ 'AIX_GENUINE_CPLUSPLUS': 0,
+ 'ALIGNOF_LONG': 8,
+ 'ALIGNOF_SIZE_T': 8,
+ 'ALT_SOABI': 0,
+ 'ANDROID_API_LEVEL': 0,
+ 'AR': 'x86_64-conda_cos6-linux-gnu-ar',
+ 'ARFLAGS': 'rcs',
+ 'BASECFLAGS': '-Wno-unused-result -Wsign-compare',
+ 'BASECPPFLAGS': '-IObjects -IInclude -IPython',
+ 'BASEMODLIBS': '',
+ 'BINDIR': '/root/envs/evalkit_tf446/bin',
+ 'BINLIBDEST': '/root/envs/evalkit_tf446/lib/python3.10',
+ 'BLDLIBRARY': 'libpython3.10.a',
+ 'BLDSHARED': 'x86_64-conda_cos6-linux-gnu-gcc -pthread -shared -Wl,-O2 '
+              '-Wl,--sort-common -Wl,--as-needed -Wl,-z,relro -Wl,-z,now '
+              '-Wl,--disable-new-dtags -Wl,--gc-sections '
+              '-Wl,-rpath,/root/envs/evalkit_tf446/lib '
+              '-Wl,-rpath-link,/root/envs/evalkit_tf446/lib '
+              '-L/root/envs/evalkit_tf446/lib '
+              '-Wl,-O2 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro '
+              '-Wl,-z,now -Wl,--disable-new-dtags -Wl,--gc-sections '
+              '-Wl,-rpath,/root/envs/evalkit_tf446/lib '
+              '-Wl,-rpath-link,/root/envs/evalkit_tf446/lib '
+              '-L/root/envs/evalkit_tf446/lib',
+ 'BUILDEXE': '',
+ 'BUILDPYTHON': 'python',
+ 'BUILD_GNU_TYPE': 'x86_64-conda_cos6-linux-gnu',
+ 'BYTESTR_DEPS': '\\',
+ 'CC': 'x86_64-conda_cos6-linux-gnu-gcc -pthread',
+ 'CCSHARED': '-fPIC',
+ 'CFLAGS': '-Wno-unused-result -Wsign-compare -DNDEBUG -fwrapv -O2 -Wall '
+           '-march=nocona -mtune=haswell -ftree-vectorize -fPIC '
+           '-fstack-protector-strong -fno-plt -O2 -ffunction-sections -pipe '
+           '-isystem '
+           '/root/envs/evalkit_tf446/include '
+           ' '
+           ' '
+           '    '
+           '-march=nocona -mtune=haswell -ftree-vectorize -fPIC '
+           '-fstack-protector-strong -fno-plt -O2 -ffunction-sections -pipe '
+           '-isystem '
+           '/root/envs/evalkit_tf446/include '
+           ' '
+           ' '
+           '   ',
+ 'CFLAGSFORSHARED': '',
+ 'CFLAGS_ALIASING': '',
+ 'CONFIGFILES': 'configure configure.ac acconfig.h pyconfig.h.in '
+                'Makefile.pre.in',
+ 'CONFIGURE_CFLAGS': '-march=nocona -mtune=haswell -ftree-vectorize -fPIC '
+                     '-fstack-protector-strong -fno-plt -O2 '
+                     '-ffunction-sections -pipe -isystem '
+                     '/root/envs/evalkit_tf446/include '
+                     ' '
+                     ' '
+                     '  '
+                     ' ',
+ 'CONFIGURE_CFLAGS_NODIST': '-fno-semantic-interposition  '
+                            '  '
+                            ' -g -std=c99 -Wextra '
+                            '-Wno-unused-result -Wno-unused-parameter '
+                            '-Wno-missing-field-initializers '
+                            '-Werror=implicit-function-declaration '
+                            '-fvisibility=hidden',
+ 'CONFIGURE_CPPFLAGS': '-DNDEBUG -D_FORTIFY_SOURCE=2 -O2 -isystem '
+                       '/root/envs/evalkit_tf446/include '
+                       '-I/root/envs/evalkit_tf446/include',
+ 'CONFIGURE_LDFLAGS': '-Wl,-O2 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro '
+                      '-Wl,-z,now -Wl,--disable-new-dtags -Wl,--gc-sections '
+                      '-Wl,-rpath,/root/envs/evalkit_tf446/lib '
+                      '-Wl,-rpath-link,/root/envs/evalkit_tf446/lib '
+                      '-L/root/envs/evalkit_tf446/lib',
+ 'CONFIGURE_LDFLAGS_NODIST': '-fno-semantic-interposition  '
+                             '  '
+                             ' -g',
+ 'CONFIG_ARGS': "'--prefix=/root/envs/evalkit_tf446' "
+                "'--build=x86_64-conda_cos6-linux-gnu' "
+                "'--host=x86_64-conda_cos6-linux-gnu' '--enable-ipv6' "
+                "'--with-ensurepip=no' "
+                "'--with-tzpath=/root/envs/evalkit_tf446/share/zoneinfo:/root/envs/evalkit_tf446/share/tzinfo' "
+                "'--with-computed-gotos' '--with-system-ffi' "
+                "'--enable-loadable-sqlite-extensions' "
+                "'--with-tcltk-includes=-I/root/envs/evalkit_tf446/include' "
+                "'--with-tcltk-libs=-L/root/envs/evalkit_tf446/lib "
+                "-ltcl8.6 -ltk8.6' '--with-platlibdir=lib' '--with-lto' "
+                "'--enable-optimizations' "
+                "'-oldincludedir=/croot/python-split_1733933809325/_build_env/x86_64-conda_cos6-linux-gnu/sysroot/usr/include' "
+                "'--disable-shared' 'PROFILE_TASK=-m test --pgo' "
+                "'build_alias=x86_64-conda_cos6-linux-gnu' "
+                "'host_alias=x86_64-conda_cos6-linux-gnu' 'MACHDEP=linux' "
+                "'CC=x86_64-conda_cos6-linux-gnu-gcc' 'CFLAGS=-march=nocona "
+                '-mtune=haswell -ftree-vectorize -fPIC '
+                '-fstack-protector-strong -fno-plt -O2 -ffunction-sections '
+                '-pipe -isystem '
+                '/root/envs/evalkit_tf446/include '
+                ' '
+                ' '
+                '   '
+                "' 'LDFLAGS=-Wl,-O2 -Wl,--sort-common -Wl,--as-needed "
+                '-Wl,-z,relro -Wl,-z,now -Wl,--disable-new-dtags '
+                '-Wl,--gc-sections '
+                '-Wl,-rpath,/root/envs/evalkit_tf446/lib '
+                '-Wl,-rpath-link,/root/envs/evalkit_tf446/lib '
+                "-L/root/envs/evalkit_tf446/lib' "
+                "'CPPFLAGS=-DNDEBUG -D_FORTIFY_SOURCE=2 -O2 -isystem "
+                '/root/envs/evalkit_tf446/include '
+                "-I/root/envs/evalkit_tf446/include' "
+                "'CPP=/croot/python-split_1733933809325/_build_env/bin/x86_64-conda_cos6-linux-gnu-cpp' "
+                "'PKG_CONFIG_PATH=/root/envs/evalkit_tf446/lib/pkgconfig'",
+ 'CONFINCLUDEDIR': '/root/envs/evalkit_tf446/include',
+ 'CONFINCLUDEPY': '/root/envs/evalkit_tf446/include/python3.10',
+ 'COREPYTHONPATH': '',
+ 'COVERAGE_INFO': '/croot/python-split_1733933809325/work/build-static/coverage.info',
+ 'COVERAGE_REPORT': '/croot/python-split_1733933809325/work/build-static/lcov-report',
+ 'COVERAGE_REPORT_OPTIONS': '--no-branch-coverage --title "CPython lcov '
+                            'report"',
+ 'CPPFLAGS': '-IObjects -IInclude -IPython -I. '
+             '-I/croot/python-split_1733933809325/work/Include -DNDEBUG '
+             '-D_FORTIFY_SOURCE=2 -O2 -isystem '
+             '/root/envs/evalkit_tf446/include '
+             '-I/root/envs/evalkit_tf446/include '
+             '-DNDEBUG -D_FORTIFY_SOURCE=2 -O2 -isystem '
+             '/root/envs/evalkit_tf446/include '
+             '-I/root/envs/evalkit_tf446/include',
+ 'CXX': 'x86_64-conda_cos6-linux-gnu-c++ -pthread',
+ 'DESTDIRS': '/root/envs/evalkit_tf446 '
+             '/root/envs/evalkit_tf446/lib '
+             '/root/envs/evalkit_tf446/lib/python3.10 '
+             '/root/envs/evalkit_tf446/lib/python3.10/lib-dynload',
+ 'DESTLIB': '/root/envs/evalkit_tf446/lib/python3.10',
+ 'DESTPATH': '',
+ 'DESTSHARED': '/root/envs/evalkit_tf446/lib/python3.10/lib-dynload',
+ 'DFLAGS': '',
+ 'DIRMODE': 755,
+ 'DIST': 'README.rst ChangeLog configure configure.ac acconfig.h pyconfig.h.in '
+         'Makefile.pre.in Include Lib Misc Ext-dummy',
+ 'DISTDIRS': 'Include Lib Misc Ext-dummy',
+ 'DISTFILES': 'README.rst ChangeLog configure configure.ac acconfig.h '
+              'pyconfig.h.in Makefile.pre.in',
+ 'DLINCLDIR': '.',
+ 'DLLLIBRARY': '',
+ 'DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754': 0,
+ 'DOUBLE_IS_BIG_ENDIAN_IEEE754': 0,
+ 'DOUBLE_IS_LITTLE_ENDIAN_IEEE754': 1,
+ 'DTRACE': '',
+ 'DTRACE_DEPS': '\\',
+ 'DTRACE_HEADERS': '',
+ 'DTRACE_OBJS': '',
+ 'DYNLOADFILE': 'dynload_shlib.o',
+ 'ENABLE_IPV6': 1,
+ 'ENSUREPIP': 'no',
+ 'EXE': '',
+ 'EXEMODE': 755,
+ 'EXPERIMENTAL_ISOLATED_SUBINTERPRETERS': 0,
+ 'EXPORTSFROM': '',
+ 'EXPORTSYMS': '',
+ 'EXTRATESTOPTS': '',
+ 'EXT_SUFFIX': '.cpython-310-x86_64-linux-gnu.so',
+ 'FILEMODE': 644,
+ 'FLOAT_WORDS_BIGENDIAN': 0,
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+ 'STRIPFLAG': '-s',
+ 'SUBDIRS': '',
+ 'SUBDIRSTOO': 'Include Lib Misc',
+ 'SYSLIBS': '-lm',
+ 'SYS_SELECT_WITH_SYS_TIME': 1,
+ 'TCLTK_INCLUDES': '-I/root/envs/evalkit_tf446/include',
+ 'TCLTK_LIBS': '-L/root/envs/evalkit_tf446/lib '
+               '-ltcl8.6 -ltk8.6',
+ 'TESTOPTS': '',
+ 'TESTPATH': '',
+ 'TESTPYTHON': './python',
+ 'TESTPYTHONOPTS': '',
+ 'TESTRUNNER': './python '
+               '/croot/python-split_1733933809325/work/Tools/scripts/run_tests.py',
+ 'TESTSUBDIRS': 'ctypes/test \\',
+ 'TESTTIMEOUT': 1200,
+ 'TEST_MODULES': 'yes',
+ 'THREAD_STACK_SIZE': 0,
+ 'TIMEMODULE_LIB': 0,
+ 'TIME_WITH_SYS_TIME': 1,
+ 'TM_IN_SYS_TIME': 0,
+ 'TZPATH': '/root/envs/evalkit_tf446/share/zoneinfo:/root/envs/evalkit_tf446/share/tzinfo',
+ 'UNICODE_DEPS': '\\',
+ 'UNIVERSALSDK': '',
+ 'UPDATE_FILE': '/croot/python-split_1733933809325/work/Tools/scripts/update_file.py',
+ 'USE_COMPUTED_GOTOS': 1,
+ 'VERSION': '3.10',
+ 'VPATH': '/croot/python-split_1733933809325/work',
+ 'WHEEL_PKG_DIR': '',
+ 'WINDOW_HAS_FLAGS': 1,
+ 'WITH_DECIMAL_CONTEXTVAR': 1,
+ 'WITH_DOC_STRINGS': 1,
+ 'WITH_DTRACE': 0,
+ 'WITH_DYLD': 0,
+ 'WITH_EDITLINE': 0,
+ 'WITH_LIBINTL': 0,
+ 'WITH_NEXT_FRAMEWORK': 0,
+ 'WITH_PYMALLOC': 1,
+ 'WITH_VALGRIND': 0,
+ 'X87_DOUBLE_ROUNDING': 0,
+ 'XMLLIBSUBDIRS': 'xml xml/dom xml/etree xml/parsers xml/sax',
+ 'abs_builddir': '/croot/python-split_1733933809325/work/build-static',
+ 'abs_srcdir': '/croot/python-split_1733933809325/work',
+ 'datarootdir': '/root/envs/evalkit_tf446/share',
+ 'exec_prefix': '/root/envs/evalkit_tf446',
+ 'prefix': '/root/envs/evalkit_tf446',
+ 'srcdir': '/croot/python-split_1733933809325/work'}

evalkit_tf446/lib/python3.10/abc.py

@@ -0,0 +1,188 @@
+# Copyright 2007 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Abstract Base Classes (ABCs) according to PEP 3119."""
+
+
+def abstractmethod(funcobj):
+    """A decorator indicating abstract methods.
+
+    Requires that the metaclass is ABCMeta or derived from it.  A
+    class that has a metaclass derived from ABCMeta cannot be
+    instantiated unless all of its abstract methods are overridden.
+    The abstract methods can be called using any of the normal
+    'super' call mechanisms.  abstractmethod() may be used to declare
+    abstract methods for properties and descriptors.
+
+    Usage:
+
+        class C(metaclass=ABCMeta):
+            @abstractmethod
+            def my_abstract_method(self, ...):
+                ...
+    """
+    funcobj.__isabstractmethod__ = True
+    return funcobj
+
+
+class abstractclassmethod(classmethod):
+    """A decorator indicating abstract classmethods.
+
+    Deprecated, use 'classmethod' with 'abstractmethod' instead:
+
+        class C(ABC):
+            @classmethod
+            @abstractmethod
+            def my_abstract_classmethod(cls, ...):
+                ...
+
+    """
+
+    __isabstractmethod__ = True
+
+    def __init__(self, callable):
+        callable.__isabstractmethod__ = True
+        super().__init__(callable)
+
+
+class abstractstaticmethod(staticmethod):
+    """A decorator indicating abstract staticmethods.
+
+    Deprecated, use 'staticmethod' with 'abstractmethod' instead:
+
+        class C(ABC):
+            @staticmethod
+            @abstractmethod
+            def my_abstract_staticmethod(...):
+                ...
+
+    """
+
+    __isabstractmethod__ = True
+
+    def __init__(self, callable):
+        callable.__isabstractmethod__ = True
+        super().__init__(callable)
+
+
+class abstractproperty(property):
+    """A decorator indicating abstract properties.
+
+    Deprecated, use 'property' with 'abstractmethod' instead:
+
+        class C(ABC):
+            @property
+            @abstractmethod
+            def my_abstract_property(self):
+                ...
+
+    """
+
+    __isabstractmethod__ = True
+
+
+try:
+    from _abc import (get_cache_token, _abc_init, _abc_register,
+                      _abc_instancecheck, _abc_subclasscheck, _get_dump,
+                      _reset_registry, _reset_caches)
+except ImportError:
+    from _py_abc import ABCMeta, get_cache_token
+    ABCMeta.__module__ = 'abc'
+else:
+    class ABCMeta(type):
+        """Metaclass for defining Abstract Base Classes (ABCs).
+
+        Use this metaclass to create an ABC.  An ABC can be subclassed
+        directly, and then acts as a mix-in class.  You can also register
+        unrelated concrete classes (even built-in classes) and unrelated
+        ABCs as 'virtual subclasses' -- these and their descendants will
+        be considered subclasses of the registering ABC by the built-in
+        issubclass() function, but the registering ABC won't show up in
+        their MRO (Method Resolution Order) nor will method
+        implementations defined by the registering ABC be callable (not
+        even via super()).
+        """
+        def __new__(mcls, name, bases, namespace, **kwargs):
+            cls = super().__new__(mcls, name, bases, namespace, **kwargs)
+            _abc_init(cls)
+            return cls
+
+        def register(cls, subclass):
+            """Register a virtual subclass of an ABC.
+
+            Returns the subclass, to allow usage as a class decorator.
+            """
+            return _abc_register(cls, subclass)
+
+        def __instancecheck__(cls, instance):
+            """Override for isinstance(instance, cls)."""
+            return _abc_instancecheck(cls, instance)
+
+        def __subclasscheck__(cls, subclass):
+            """Override for issubclass(subclass, cls)."""
+            return _abc_subclasscheck(cls, subclass)
+
+        def _dump_registry(cls, file=None):
+            """Debug helper to print the ABC registry."""
+            print(f"Class: {cls.__module__}.{cls.__qualname__}", file=file)
+            print(f"Inv. counter: {get_cache_token()}", file=file)
+            (_abc_registry, _abc_cache, _abc_negative_cache,
+             _abc_negative_cache_version) = _get_dump(cls)
+            print(f"_abc_registry: {_abc_registry!r}", file=file)
+            print(f"_abc_cache: {_abc_cache!r}", file=file)
+            print(f"_abc_negative_cache: {_abc_negative_cache!r}", file=file)
+            print(f"_abc_negative_cache_version: {_abc_negative_cache_version!r}",
+                  file=file)
+
+        def _abc_registry_clear(cls):
+            """Clear the registry (for debugging or testing)."""
+            _reset_registry(cls)
+
+        def _abc_caches_clear(cls):
+            """Clear the caches (for debugging or testing)."""
+            _reset_caches(cls)
+
+
+def update_abstractmethods(cls):
+    """Recalculate the set of abstract methods of an abstract class.
+
+    If a class has had one of its abstract methods implemented after the
+    class was created, the method will not be considered implemented until
+    this function is called. Alternatively, if a new abstract method has been
+    added to the class, it will only be considered an abstract method of the
+    class after this function is called.
+
+    This function should be called before any use is made of the class,
+    usually in class decorators that add methods to the subject class.
+
+    Returns cls, to allow usage as a class decorator.
+
+    If cls is not an instance of ABCMeta, does nothing.
+    """
+    if not hasattr(cls, '__abstractmethods__'):
+        # We check for __abstractmethods__ here because cls might by a C
+        # implementation or a python implementation (especially during
+        # testing), and we want to handle both cases.
+        return cls
+
+    abstracts = set()
+    # Check the existing abstract methods of the parents, keep only the ones
+    # that are not implemented.
+    for scls in cls.__bases__:
+        for name in getattr(scls, '__abstractmethods__', ()):
+            value = getattr(cls, name, None)
+            if getattr(value, "__isabstractmethod__", False):
+                abstracts.add(name)
+    # Also add any other newly added abstract methods.
+    for name, value in cls.__dict__.items():
+        if getattr(value, "__isabstractmethod__", False):
+            abstracts.add(name)
+    cls.__abstractmethods__ = frozenset(abstracts)
+    return cls
+
+
+class ABC(metaclass=ABCMeta):
+    """Helper class that provides a standard way to create an ABC using
+    inheritance.
+    """
+    __slots__ = ()

evalkit_tf446/lib/python3.10/ast.py

@@ -0,0 +1,1709 @@
+"""
+    ast
+    ~~~
+
+    The `ast` module helps Python applications to process trees of the Python
+    abstract syntax grammar.  The abstract syntax itself might change with
+    each Python release; this module helps to find out programmatically what
+    the current grammar looks like and allows modifications of it.
+
+    An abstract syntax tree can be generated by passing `ast.PyCF_ONLY_AST` as
+    a flag to the `compile()` builtin function or by using the `parse()`
+    function from this module.  The result will be a tree of objects whose
+    classes all inherit from `ast.AST`.
+
+    A modified abstract syntax tree can be compiled into a Python code object
+    using the built-in `compile()` function.
+
+    Additionally various helper functions are provided that make working with
+    the trees simpler.  The main intention of the helper functions and this
+    module in general is to provide an easy to use interface for libraries
+    that work tightly with the python syntax (template engines for example).
+
+
+    :copyright: Copyright 2008 by Armin Ronacher.
+    :license: Python License.
+"""
+import sys
+from _ast import *
+from contextlib import contextmanager, nullcontext
+from enum import IntEnum, auto
+
+
+def parse(source, filename='<unknown>', mode='exec', *,
+          type_comments=False, feature_version=None):
+    """
+    Parse the source into an AST node.
+    Equivalent to compile(source, filename, mode, PyCF_ONLY_AST).
+    Pass type_comments=True to get back type comments where the syntax allows.
+    """
+    flags = PyCF_ONLY_AST
+    if type_comments:
+        flags |= PyCF_TYPE_COMMENTS
+    if isinstance(feature_version, tuple):
+        major, minor = feature_version  # Should be a 2-tuple.
+        assert major == 3
+        feature_version = minor
+    elif feature_version is None:
+        feature_version = -1
+    # Else it should be an int giving the minor version for 3.x.
+    return compile(source, filename, mode, flags,
+                   _feature_version=feature_version)
+
+
+def literal_eval(node_or_string):
+    """
+    Evaluate an expression node or a string containing only a Python
+    expression.  The string or node provided may only consist of the following
+    Python literal structures: strings, bytes, numbers, tuples, lists, dicts,
+    sets, booleans, and None.
+
+    Caution: A complex expression can overflow the C stack and cause a crash.
+    """
+    if isinstance(node_or_string, str):
+        node_or_string = parse(node_or_string.lstrip(" \t"), mode='eval')
+    if isinstance(node_or_string, Expression):
+        node_or_string = node_or_string.body
+    def _raise_malformed_node(node):
+        msg = "malformed node or string"
+        if lno := getattr(node, 'lineno', None):
+            msg += f' on line {lno}'
+        raise ValueError(msg + f': {node!r}')
+    def _convert_num(node):
+        if not isinstance(node, Constant) or type(node.value) not in (int, float, complex):
+            _raise_malformed_node(node)
+        return node.value
+    def _convert_signed_num(node):
+        if isinstance(node, UnaryOp) and isinstance(node.op, (UAdd, USub)):
+            operand = _convert_num(node.operand)
+            if isinstance(node.op, UAdd):
+                return + operand
+            else:
+                return - operand
+        return _convert_num(node)
+    def _convert(node):
+        if isinstance(node, Constant):
+            return node.value
+        elif isinstance(node, Tuple):
+            return tuple(map(_convert, node.elts))
+        elif isinstance(node, List):
+            return list(map(_convert, node.elts))
+        elif isinstance(node, Set):
+            return set(map(_convert, node.elts))
+        elif (isinstance(node, Call) and isinstance(node.func, Name) and
+              node.func.id == 'set' and node.args == node.keywords == []):
+            return set()
+        elif isinstance(node, Dict):
+            if len(node.keys) != len(node.values):
+                _raise_malformed_node(node)
+            return dict(zip(map(_convert, node.keys),
+                            map(_convert, node.values)))
+        elif isinstance(node, BinOp) and isinstance(node.op, (Add, Sub)):
+            left = _convert_signed_num(node.left)
+            right = _convert_num(node.right)
+            if isinstance(left, (int, float)) and isinstance(right, complex):
+                if isinstance(node.op, Add):
+                    return left + right
+                else:
+                    return left - right
+        return _convert_signed_num(node)
+    return _convert(node_or_string)
+
+
+def dump(node, annotate_fields=True, include_attributes=False, *, indent=None):
+    """
+    Return a formatted dump of the tree in node.  This is mainly useful for
+    debugging purposes.  If annotate_fields is true (by default),
+    the returned string will show the names and the values for fields.
+    If annotate_fields is false, the result string will be more compact by
+    omitting unambiguous field names.  Attributes such as line
+    numbers and column offsets are not dumped by default.  If this is wanted,
+    include_attributes can be set to true.  If indent is a non-negative
+    integer or string, then the tree will be pretty-printed with that indent
+    level. None (the default) selects the single line representation.
+    """
+    def _format(node, level=0):
+        if indent is not None:
+            level += 1
+            prefix = '\n' + indent * level
+            sep = ',\n' + indent * level
+        else:
+            prefix = ''
+            sep = ', '
+        if isinstance(node, AST):
+            cls = type(node)
+            args = []
+            allsimple = True
+            keywords = annotate_fields
+            for name in node._fields:
+                try:
+                    value = getattr(node, name)
+                except AttributeError:
+                    keywords = True
+                    continue
+                if value is None and getattr(cls, name, ...) is None:
+                    keywords = True
+                    continue
+                value, simple = _format(value, level)
+                allsimple = allsimple and simple
+                if keywords:
+                    args.append('%s=%s' % (name, value))
+                else:
+                    args.append(value)
+            if include_attributes and node._attributes:
+                for name in node._attributes:
+                    try:
+                        value = getattr(node, name)
+                    except AttributeError:
+                        continue
+                    if value is None and getattr(cls, name, ...) is None:
+                        continue
+                    value, simple = _format(value, level)
+                    allsimple = allsimple and simple
+                    args.append('%s=%s' % (name, value))
+            if allsimple and len(args) <= 3:
+                return '%s(%s)' % (node.__class__.__name__, ', '.join(args)), not args
+            return '%s(%s%s)' % (node.__class__.__name__, prefix, sep.join(args)), False
+        elif isinstance(node, list):
+            if not node:
+                return '[]', True
+            return '[%s%s]' % (prefix, sep.join(_format(x, level)[0] for x in node)), False
+        return repr(node), True
+
+    if not isinstance(node, AST):
+        raise TypeError('expected AST, got %r' % node.__class__.__name__)
+    if indent is not None and not isinstance(indent, str):
+        indent = ' ' * indent
+    return _format(node)[0]
+
+
+def copy_location(new_node, old_node):
+    """
+    Copy source location (`lineno`, `col_offset`, `end_lineno`, and `end_col_offset`
+    attributes) from *old_node* to *new_node* if possible, and return *new_node*.
+    """
+    for attr in 'lineno', 'col_offset', 'end_lineno', 'end_col_offset':
+        if attr in old_node._attributes and attr in new_node._attributes:
+            value = getattr(old_node, attr, None)
+            # end_lineno and end_col_offset are optional attributes, and they
+            # should be copied whether the value is None or not.
+            if value is not None or (
+                hasattr(old_node, attr) and attr.startswith("end_")
+            ):
+                setattr(new_node, attr, value)
+    return new_node
+
+
+def fix_missing_locations(node):
+    """
+    When you compile a node tree with compile(), the compiler expects lineno and
+    col_offset attributes for every node that supports them.  This is rather
+    tedious to fill in for generated nodes, so this helper adds these attributes
+    recursively where not already set, by setting them to the values of the
+    parent node.  It works recursively starting at *node*.
+    """
+    def _fix(node, lineno, col_offset, end_lineno, end_col_offset):
+        if 'lineno' in node._attributes:
+            if not hasattr(node, 'lineno'):
+                node.lineno = lineno
+            else:
+                lineno = node.lineno
+        if 'end_lineno' in node._attributes:
+            if getattr(node, 'end_lineno', None) is None:
+                node.end_lineno = end_lineno
+            else:
+                end_lineno = node.end_lineno
+        if 'col_offset' in node._attributes:
+            if not hasattr(node, 'col_offset'):
+                node.col_offset = col_offset
+            else:
+                col_offset = node.col_offset
+        if 'end_col_offset' in node._attributes:
+            if getattr(node, 'end_col_offset', None) is None:
+                node.end_col_offset = end_col_offset
+            else:
+                end_col_offset = node.end_col_offset
+        for child in iter_child_nodes(node):
+            _fix(child, lineno, col_offset, end_lineno, end_col_offset)
+    _fix(node, 1, 0, 1, 0)
+    return node
+
+
+def increment_lineno(node, n=1):
+    """
+    Increment the line number and end line number of each node in the tree
+    starting at *node* by *n*. This is useful to "move code" to a different
+    location in a file.
+    """
+    for child in walk(node):
+        # TypeIgnore is a special case where lineno is not an attribute
+        # but rather a field of the node itself.
+        if isinstance(child, TypeIgnore):
+            child.lineno = getattr(child, 'lineno', 0) + n
+            continue
+
+        if 'lineno' in child._attributes:
+            child.lineno = getattr(child, 'lineno', 0) + n
+        if (
+            "end_lineno" in child._attributes
+            and (end_lineno := getattr(child, "end_lineno", 0)) is not None
+        ):
+            child.end_lineno = end_lineno + n
+    return node
+
+
+def iter_fields(node):
+    """
+    Yield a tuple of ``(fieldname, value)`` for each field in ``node._fields``
+    that is present on *node*.
+    """
+    for field in node._fields:
+        try:
+            yield field, getattr(node, field)
+        except AttributeError:
+            pass
+
+
+def iter_child_nodes(node):
+    """
+    Yield all direct child nodes of *node*, that is, all fields that are nodes
+    and all items of fields that are lists of nodes.
+    """
+    for name, field in iter_fields(node):
+        if isinstance(field, AST):
+            yield field
+        elif isinstance(field, list):
+            for item in field:
+                if isinstance(item, AST):
+                    yield item
+
+
+def get_docstring(node, clean=True):
+    """
+    Return the docstring for the given node or None if no docstring can
+    be found.  If the node provided does not have docstrings a TypeError
+    will be raised.
+
+    If *clean* is `True`, all tabs are expanded to spaces and any whitespace
+    that can be uniformly removed from the second line onwards is removed.
+    """
+    if not isinstance(node, (AsyncFunctionDef, FunctionDef, ClassDef, Module)):
+        raise TypeError("%r can't have docstrings" % node.__class__.__name__)
+    if not(node.body and isinstance(node.body[0], Expr)):
+        return None
+    node = node.body[0].value
+    if isinstance(node, Str):
+        text = node.s
+    elif isinstance(node, Constant) and isinstance(node.value, str):
+        text = node.value
+    else:
+        return None
+    if clean:
+        import inspect
+        text = inspect.cleandoc(text)
+    return text
+
+
+def _splitlines_no_ff(source):
+    """Split a string into lines ignoring form feed and other chars.
+
+    This mimics how the Python parser splits source code.
+    """
+    idx = 0
+    lines = []
+    next_line = ''
+    while idx < len(source):
+        c = source[idx]
+        next_line += c
+        idx += 1
+        # Keep \r\n together
+        if c == '\r' and idx < len(source) and source[idx] == '\n':
+            next_line += '\n'
+            idx += 1
+        if c in '\r\n':
+            lines.append(next_line)
+            next_line = ''
+
+    if next_line:
+        lines.append(next_line)
+    return lines
+
+
+def _pad_whitespace(source):
+    r"""Replace all chars except '\f\t' in a line with spaces."""
+    result = ''
+    for c in source:
+        if c in '\f\t':
+            result += c
+        else:
+            result += ' '
+    return result
+
+
+def get_source_segment(source, node, *, padded=False):
+    """Get source code segment of the *source* that generated *node*.
+
+    If some location information (`lineno`, `end_lineno`, `col_offset`,
+    or `end_col_offset`) is missing, return None.
+
+    If *padded* is `True`, the first line of a multi-line statement will
+    be padded with spaces to match its original position.
+    """
+    try:
+        if node.end_lineno is None or node.end_col_offset is None:
+            return None
+        lineno = node.lineno - 1
+        end_lineno = node.end_lineno - 1
+        col_offset = node.col_offset
+        end_col_offset = node.end_col_offset
+    except AttributeError:
+        return None
+
+    lines = _splitlines_no_ff(source)
+    if end_lineno == lineno:
+        return lines[lineno].encode()[col_offset:end_col_offset].decode()
+
+    if padded:
+        padding = _pad_whitespace(lines[lineno].encode()[:col_offset].decode())
+    else:
+        padding = ''
+
+    first = padding + lines[lineno].encode()[col_offset:].decode()
+    last = lines[end_lineno].encode()[:end_col_offset].decode()
+    lines = lines[lineno+1:end_lineno]
+
+    lines.insert(0, first)
+    lines.append(last)
+    return ''.join(lines)
+
+
+def walk(node):
+    """
+    Recursively yield all descendant nodes in the tree starting at *node*
+    (including *node* itself), in no specified order.  This is useful if you
+    only want to modify nodes in place and don't care about the context.
+    """
+    from collections import deque
+    todo = deque([node])
+    while todo:
+        node = todo.popleft()
+        todo.extend(iter_child_nodes(node))
+        yield node
+
+
+class NodeVisitor(object):
+    """
+    A node visitor base class that walks the abstract syntax tree and calls a
+    visitor function for every node found.  This function may return a value
+    which is forwarded by the `visit` method.
+
+    This class is meant to be subclassed, with the subclass adding visitor
+    methods.
+
+    Per default the visitor functions for the nodes are ``'visit_'`` +
+    class name of the node.  So a `TryFinally` node visit function would
+    be `visit_TryFinally`.  This behavior can be changed by overriding
+    the `visit` method.  If no visitor function exists for a node
+    (return value `None`) the `generic_visit` visitor is used instead.
+
+    Don't use the `NodeVisitor` if you want to apply changes to nodes during
+    traversing.  For this a special visitor exists (`NodeTransformer`) that
+    allows modifications.
+    """
+
+    def visit(self, node):
+        """Visit a node."""
+        method = 'visit_' + node.__class__.__name__
+        visitor = getattr(self, method, self.generic_visit)
+        return visitor(node)
+
+    def generic_visit(self, node):
+        """Called if no explicit visitor function exists for a node."""
+        for field, value in iter_fields(node):
+            if isinstance(value, list):
+                for item in value:
+                    if isinstance(item, AST):
+                        self.visit(item)
+            elif isinstance(value, AST):
+                self.visit(value)
+
+    def visit_Constant(self, node):
+        value = node.value
+        type_name = _const_node_type_names.get(type(value))
+        if type_name is None:
+            for cls, name in _const_node_type_names.items():
+                if isinstance(value, cls):
+                    type_name = name
+                    break
+        if type_name is not None:
+            method = 'visit_' + type_name
+            try:
+                visitor = getattr(self, method)
+            except AttributeError:
+                pass
+            else:
+                import warnings
+                warnings.warn(f"{method} is deprecated; add visit_Constant",
+                              DeprecationWarning, 2)
+                return visitor(node)
+        return self.generic_visit(node)
+
+
+class NodeTransformer(NodeVisitor):
+    """
+    A :class:`NodeVisitor` subclass that walks the abstract syntax tree and
+    allows modification of nodes.
+
+    The `NodeTransformer` will walk the AST and use the return value of the
+    visitor methods to replace or remove the old node.  If the return value of
+    the visitor method is ``None``, the node will be removed from its location,
+    otherwise it is replaced with the return value.  The return value may be the
+    original node in which case no replacement takes place.
+
+    Here is an example transformer that rewrites all occurrences of name lookups
+    (``foo``) to ``data['foo']``::
+
+       class RewriteName(NodeTransformer):
+
+           def visit_Name(self, node):
+               return Subscript(
+                   value=Name(id='data', ctx=Load()),
+                   slice=Constant(value=node.id),
+                   ctx=node.ctx
+               )
+
+    Keep in mind that if the node you're operating on has child nodes you must
+    either transform the child nodes yourself or call the :meth:`generic_visit`
+    method for the node first.
+
+    For nodes that were part of a collection of statements (that applies to all
+    statement nodes), the visitor may also return a list of nodes rather than
+    just a single node.
+
+    Usually you use the transformer like this::
+
+       node = YourTransformer().visit(node)
+    """
+
+    def generic_visit(self, node):
+        for field, old_value in iter_fields(node):
+            if isinstance(old_value, list):
+                new_values = []
+                for value in old_value:
+                    if isinstance(value, AST):
+                        value = self.visit(value)
+                        if value is None:
+                            continue
+                        elif not isinstance(value, AST):
+                            new_values.extend(value)
+                            continue
+                    new_values.append(value)
+                old_value[:] = new_values
+            elif isinstance(old_value, AST):
+                new_node = self.visit(old_value)
+                if new_node is None:
+                    delattr(node, field)
+                else:
+                    setattr(node, field, new_node)
+        return node
+
+
+# If the ast module is loaded more than once, only add deprecated methods once
+if not hasattr(Constant, 'n'):
+    # The following code is for backward compatibility.
+    # It will be removed in future.
+
+    def _getter(self):
+        """Deprecated. Use value instead."""
+        return self.value
+
+    def _setter(self, value):
+        self.value = value
+
+    Constant.n = property(_getter, _setter)
+    Constant.s = property(_getter, _setter)
+
+class _ABC(type):
+
+    def __init__(cls, *args):
+        cls.__doc__ = """Deprecated AST node class. Use ast.Constant instead"""
+
+    def __instancecheck__(cls, inst):
+        if not isinstance(inst, Constant):
+            return False
+        if cls in _const_types:
+            try:
+                value = inst.value
+            except AttributeError:
+                return False
+            else:
+                return (
+                    isinstance(value, _const_types[cls]) and
+                    not isinstance(value, _const_types_not.get(cls, ()))
+                )
+        return type.__instancecheck__(cls, inst)
+
+def _new(cls, *args, **kwargs):
+    for key in kwargs:
+        if key not in cls._fields:
+            # arbitrary keyword arguments are accepted
+            continue
+        pos = cls._fields.index(key)
+        if pos < len(args):
+            raise TypeError(f"{cls.__name__} got multiple values for argument {key!r}")
+    if cls in _const_types:
+        return Constant(*args, **kwargs)
+    return Constant.__new__(cls, *args, **kwargs)
+
+class Num(Constant, metaclass=_ABC):
+    _fields = ('n',)
+    __new__ = _new
+
+class Str(Constant, metaclass=_ABC):
+    _fields = ('s',)
+    __new__ = _new
+
+class Bytes(Constant, metaclass=_ABC):
+    _fields = ('s',)
+    __new__ = _new
+
+class NameConstant(Constant, metaclass=_ABC):
+    __new__ = _new
+
+class Ellipsis(Constant, metaclass=_ABC):
+    _fields = ()
+
+    def __new__(cls, *args, **kwargs):
+        if cls is Ellipsis:
+            return Constant(..., *args, **kwargs)
+        return Constant.__new__(cls, *args, **kwargs)
+
+_const_types = {
+    Num: (int, float, complex),
+    Str: (str,),
+    Bytes: (bytes,),
+    NameConstant: (type(None), bool),
+    Ellipsis: (type(...),),
+}
+_const_types_not = {
+    Num: (bool,),
+}
+
+_const_node_type_names = {
+    bool: 'NameConstant',  # should be before int
+    type(None): 'NameConstant',
+    int: 'Num',
+    float: 'Num',
+    complex: 'Num',
+    str: 'Str',
+    bytes: 'Bytes',
+    type(...): 'Ellipsis',
+}
+
+class slice(AST):
+    """Deprecated AST node class."""
+
+class Index(slice):
+    """Deprecated AST node class. Use the index value directly instead."""
+    def __new__(cls, value, **kwargs):
+        return value
+
+class ExtSlice(slice):
+    """Deprecated AST node class. Use ast.Tuple instead."""
+    def __new__(cls, dims=(), **kwargs):
+        return Tuple(list(dims), Load(), **kwargs)
+
+# If the ast module is loaded more than once, only add deprecated methods once
+if not hasattr(Tuple, 'dims'):
+    # The following code is for backward compatibility.
+    # It will be removed in future.
+
+    def _dims_getter(self):
+        """Deprecated. Use elts instead."""
+        return self.elts
+
+    def _dims_setter(self, value):
+        self.elts = value
+
+    Tuple.dims = property(_dims_getter, _dims_setter)
+
+class Suite(mod):
+    """Deprecated AST node class.  Unused in Python 3."""
+
+class AugLoad(expr_context):
+    """Deprecated AST node class.  Unused in Python 3."""
+
+class AugStore(expr_context):
+    """Deprecated AST node class.  Unused in Python 3."""
+
+class Param(expr_context):
+    """Deprecated AST node class.  Unused in Python 3."""
+
+
+# Large float and imaginary literals get turned into infinities in the AST.
+# We unparse those infinities to INFSTR.
+_INFSTR = "1e" + repr(sys.float_info.max_10_exp + 1)
+
+class _Precedence(IntEnum):
+    """Precedence table that originated from python grammar."""
+
+    TUPLE = auto()
+    YIELD = auto()           # 'yield', 'yield from'
+    TEST = auto()            # 'if'-'else', 'lambda'
+    OR = auto()              # 'or'
+    AND = auto()             # 'and'
+    NOT = auto()             # 'not'
+    CMP = auto()             # '<', '>', '==', '>=', '<=', '!=',
+                             # 'in', 'not in', 'is', 'is not'
+    EXPR = auto()
+    BOR = EXPR               # '|'
+    BXOR = auto()            # '^'
+    BAND = auto()            # '&'
+    SHIFT = auto()           # '<<', '>>'
+    ARITH = auto()           # '+', '-'
+    TERM = auto()            # '*', '@', '/', '%', '//'
+    FACTOR = auto()          # unary '+', '-', '~'
+    POWER = auto()           # '**'
+    AWAIT = auto()           # 'await'
+    ATOM = auto()
+
+    def next(self):
+        try:
+            return self.__class__(self + 1)
+        except ValueError:
+            return self
+
+
+_SINGLE_QUOTES = ("'", '"')
+_MULTI_QUOTES = ('"""', "'''")
+_ALL_QUOTES = (*_SINGLE_QUOTES, *_MULTI_QUOTES)
+
+class _Unparser(NodeVisitor):
+    """Methods in this class recursively traverse an AST and
+    output source code for the abstract syntax; original formatting
+    is disregarded."""
+
+    def __init__(self, *, _avoid_backslashes=False):
+        self._source = []
+        self._buffer = []
+        self._precedences = {}
+        self._type_ignores = {}
+        self._indent = 0
+        self._avoid_backslashes = _avoid_backslashes
+
+    def interleave(self, inter, f, seq):
+        """Call f on each item in seq, calling inter() in between."""
+        seq = iter(seq)
+        try:
+            f(next(seq))
+        except StopIteration:
+            pass
+        else:
+            for x in seq:
+                inter()
+                f(x)
+
+    def items_view(self, traverser, items):
+        """Traverse and separate the given *items* with a comma and append it to
+        the buffer. If *items* is a single item sequence, a trailing comma
+        will be added."""
+        if len(items) == 1:
+            traverser(items[0])
+            self.write(",")
+        else:
+            self.interleave(lambda: self.write(", "), traverser, items)
+
+    def maybe_newline(self):
+        """Adds a newline if it isn't the start of generated source"""
+        if self._source:
+            self.write("\n")
+
+    def fill(self, text=""):
+        """Indent a piece of text and append it, according to the current
+        indentation level"""
+        self.maybe_newline()
+        self.write("    " * self._indent + text)
+
+    def write(self, text):
+        """Append a piece of text"""
+        self._source.append(text)
+
+    def buffer_writer(self, text):
+        self._buffer.append(text)
+
+    @property
+    def buffer(self):
+        value = "".join(self._buffer)
+        self._buffer.clear()
+        return value
+
+    @contextmanager
+    def block(self, *, extra = None):
+        """A context manager for preparing the source for blocks. It adds
+        the character':', increases the indentation on enter and decreases
+        the indentation on exit. If *extra* is given, it will be directly
+        appended after the colon character.
+        """
+        self.write(":")
+        if extra:
+            self.write(extra)
+        self._indent += 1
+        yield
+        self._indent -= 1
+
+    @contextmanager
+    def delimit(self, start, end):
+        """A context manager for preparing the source for expressions. It adds
+        *start* to the buffer and enters, after exit it adds *end*."""
+
+        self.write(start)
+        yield
+        self.write(end)
+
+    def delimit_if(self, start, end, condition):
+        if condition:
+            return self.delimit(start, end)
+        else:
+            return nullcontext()
+
+    def require_parens(self, precedence, node):
+        """Shortcut to adding precedence related parens"""
+        return self.delimit_if("(", ")", self.get_precedence(node) > precedence)
+
+    def get_precedence(self, node):
+        return self._precedences.get(node, _Precedence.TEST)
+
+    def set_precedence(self, precedence, *nodes):
+        for node in nodes:
+            self._precedences[node] = precedence
+
+    def get_raw_docstring(self, node):
+        """If a docstring node is found in the body of the *node* parameter,
+        return that docstring node, None otherwise.
+
+        Logic mirrored from ``_PyAST_GetDocString``."""
+        if not isinstance(
+            node, (AsyncFunctionDef, FunctionDef, ClassDef, Module)
+        ) or len(node.body) < 1:
+            return None
+        node = node.body[0]
+        if not isinstance(node, Expr):
+            return None
+        node = node.value
+        if isinstance(node, Constant) and isinstance(node.value, str):
+            return node
+
+    def get_type_comment(self, node):
+        comment = self._type_ignores.get(node.lineno) or node.type_comment
+        if comment is not None:
+            return f" # type: {comment}"
+
+    def traverse(self, node):
+        if isinstance(node, list):
+            for item in node:
+                self.traverse(item)
+        else:
+            super().visit(node)
+
+    # Note: as visit() resets the output text, do NOT rely on
+    # NodeVisitor.generic_visit to handle any nodes (as it calls back in to
+    # the subclass visit() method, which resets self._source to an empty list)
+    def visit(self, node):
+        """Outputs a source code string that, if converted back to an ast
+        (using ast.parse) will generate an AST equivalent to *node*"""
+        self._source = []
+        self.traverse(node)
+        return "".join(self._source)
+
+    def _write_docstring_and_traverse_body(self, node):
+        if (docstring := self.get_raw_docstring(node)):
+            self._write_docstring(docstring)
+            self.traverse(node.body[1:])
+        else:
+            self.traverse(node.body)
+
+    def visit_Module(self, node):
+        self._type_ignores = {
+            ignore.lineno: f"ignore{ignore.tag}"
+            for ignore in node.type_ignores
+        }
+        self._write_docstring_and_traverse_body(node)
+        self._type_ignores.clear()
+
+    def visit_FunctionType(self, node):
+        with self.delimit("(", ")"):
+            self.interleave(
+                lambda: self.write(", "), self.traverse, node.argtypes
+            )
+
+        self.write(" -> ")
+        self.traverse(node.returns)
+
+    def visit_Expr(self, node):
+        self.fill()
+        self.set_precedence(_Precedence.YIELD, node.value)
+        self.traverse(node.value)
+
+    def visit_NamedExpr(self, node):
+        with self.require_parens(_Precedence.TUPLE, node):
+            self.set_precedence(_Precedence.ATOM, node.target, node.value)
+            self.traverse(node.target)
+            self.write(" := ")
+            self.traverse(node.value)
+
+    def visit_Import(self, node):
+        self.fill("import ")
+        self.interleave(lambda: self.write(", "), self.traverse, node.names)
+
+    def visit_ImportFrom(self, node):
+        self.fill("from ")
+        self.write("." * (node.level or 0))
+        if node.module:
+            self.write(node.module)
+        self.write(" import ")
+        self.interleave(lambda: self.write(", "), self.traverse, node.names)
+
+    def visit_Assign(self, node):
+        self.fill()
+        for target in node.targets:
+            self.traverse(target)
+            self.write(" = ")
+        self.traverse(node.value)
+        if type_comment := self.get_type_comment(node):
+            self.write(type_comment)
+
+    def visit_AugAssign(self, node):
+        self.fill()
+        self.traverse(node.target)
+        self.write(" " + self.binop[node.op.__class__.__name__] + "= ")
+        self.traverse(node.value)
+
+    def visit_AnnAssign(self, node):
+        self.fill()
+        with self.delimit_if("(", ")", not node.simple and isinstance(node.target, Name)):
+            self.traverse(node.target)
+        self.write(": ")
+        self.traverse(node.annotation)
+        if node.value:
+            self.write(" = ")
+            self.traverse(node.value)
+
+    def visit_Return(self, node):
+        self.fill("return")
+        if node.value:
+            self.write(" ")
+            self.traverse(node.value)
+
+    def visit_Pass(self, node):
+        self.fill("pass")
+
+    def visit_Break(self, node):
+        self.fill("break")
+
+    def visit_Continue(self, node):
+        self.fill("continue")
+
+    def visit_Delete(self, node):
+        self.fill("del ")
+        self.interleave(lambda: self.write(", "), self.traverse, node.targets)
+
+    def visit_Assert(self, node):
+        self.fill("assert ")
+        self.traverse(node.test)
+        if node.msg:
+            self.write(", ")
+            self.traverse(node.msg)
+
+    def visit_Global(self, node):
+        self.fill("global ")
+        self.interleave(lambda: self.write(", "), self.write, node.names)
+
+    def visit_Nonlocal(self, node):
+        self.fill("nonlocal ")
+        self.interleave(lambda: self.write(", "), self.write, node.names)
+
+    def visit_Await(self, node):
+        with self.require_parens(_Precedence.AWAIT, node):
+            self.write("await")
+            if node.value:
+                self.write(" ")
+                self.set_precedence(_Precedence.ATOM, node.value)
+                self.traverse(node.value)
+
+    def visit_Yield(self, node):
+        with self.require_parens(_Precedence.YIELD, node):
+            self.write("yield")
+            if node.value:
+                self.write(" ")
+                self.set_precedence(_Precedence.ATOM, node.value)
+                self.traverse(node.value)
+
+    def visit_YieldFrom(self, node):
+        with self.require_parens(_Precedence.YIELD, node):
+            self.write("yield from ")
+            if not node.value:
+                raise ValueError("Node can't be used without a value attribute.")
+            self.set_precedence(_Precedence.ATOM, node.value)
+            self.traverse(node.value)
+
+    def visit_Raise(self, node):
+        self.fill("raise")
+        if not node.exc:
+            if node.cause:
+                raise ValueError(f"Node can't use cause without an exception.")
+            return
+        self.write(" ")
+        self.traverse(node.exc)
+        if node.cause:
+            self.write(" from ")
+            self.traverse(node.cause)
+
+    def visit_Try(self, node):
+        self.fill("try")
+        with self.block():
+            self.traverse(node.body)
+        for ex in node.handlers:
+            self.traverse(ex)
+        if node.orelse:
+            self.fill("else")
+            with self.block():
+                self.traverse(node.orelse)
+        if node.finalbody:
+            self.fill("finally")
+            with self.block():
+                self.traverse(node.finalbody)
+
+    def visit_ExceptHandler(self, node):
+        self.fill("except")
+        if node.type:
+            self.write(" ")
+            self.traverse(node.type)
+        if node.name:
+            self.write(" as ")
+            self.write(node.name)
+        with self.block():
+            self.traverse(node.body)
+
+    def visit_ClassDef(self, node):
+        self.maybe_newline()
+        for deco in node.decorator_list:
+            self.fill("@")
+            self.traverse(deco)
+        self.fill("class " + node.name)
+        with self.delimit_if("(", ")", condition = node.bases or node.keywords):
+            comma = False
+            for e in node.bases:
+                if comma:
+                    self.write(", ")
+                else:
+                    comma = True
+                self.traverse(e)
+            for e in node.keywords:
+                if comma:
+                    self.write(", ")
+                else:
+                    comma = True
+                self.traverse(e)
+
+        with self.block():
+            self._write_docstring_and_traverse_body(node)
+
+    def visit_FunctionDef(self, node):
+        self._function_helper(node, "def")
+
+    def visit_AsyncFunctionDef(self, node):
+        self._function_helper(node, "async def")
+
+    def _function_helper(self, node, fill_suffix):
+        self.maybe_newline()
+        for deco in node.decorator_list:
+            self.fill("@")
+            self.traverse(deco)
+        def_str = fill_suffix + " " + node.name
+        self.fill(def_str)
+        with self.delimit("(", ")"):
+            self.traverse(node.args)
+        if node.returns:
+            self.write(" -> ")
+            self.traverse(node.returns)
+        with self.block(extra=self.get_type_comment(node)):
+            self._write_docstring_and_traverse_body(node)
+
+    def visit_For(self, node):
+        self._for_helper("for ", node)
+
+    def visit_AsyncFor(self, node):
+        self._for_helper("async for ", node)
+
+    def _for_helper(self, fill, node):
+        self.fill(fill)
+        self.traverse(node.target)
+        self.write(" in ")
+        self.traverse(node.iter)
+        with self.block(extra=self.get_type_comment(node)):
+            self.traverse(node.body)
+        if node.orelse:
+            self.fill("else")
+            with self.block():
+                self.traverse(node.orelse)
+
+    def visit_If(self, node):
+        self.fill("if ")
+        self.traverse(node.test)
+        with self.block():
+            self.traverse(node.body)
+        # collapse nested ifs into equivalent elifs.
+        while node.orelse and len(node.orelse) == 1 and isinstance(node.orelse[0], If):
+            node = node.orelse[0]
+            self.fill("elif ")
+            self.traverse(node.test)
+            with self.block():
+                self.traverse(node.body)
+        # final else
+        if node.orelse:
+            self.fill("else")
+            with self.block():
+                self.traverse(node.orelse)
+
+    def visit_While(self, node):
+        self.fill("while ")
+        self.traverse(node.test)
+        with self.block():
+            self.traverse(node.body)
+        if node.orelse:
+            self.fill("else")
+            with self.block():
+                self.traverse(node.orelse)
+
+    def visit_With(self, node):
+        self.fill("with ")
+        self.interleave(lambda: self.write(", "), self.traverse, node.items)
+        with self.block(extra=self.get_type_comment(node)):
+            self.traverse(node.body)
+
+    def visit_AsyncWith(self, node):
+        self.fill("async with ")
+        self.interleave(lambda: self.write(", "), self.traverse, node.items)
+        with self.block(extra=self.get_type_comment(node)):
+            self.traverse(node.body)
+
+    def _str_literal_helper(
+        self, string, *, quote_types=_ALL_QUOTES, escape_special_whitespace=False
+    ):
+        """Helper for writing string literals, minimizing escapes.
+        Returns the tuple (string literal to write, possible quote types).
+        """
+        def escape_char(c):
+            # \n and \t are non-printable, but we only escape them if
+            # escape_special_whitespace is True
+            if not escape_special_whitespace and c in "\n\t":
+                return c
+            # Always escape backslashes and other non-printable characters
+            if c == "\\" or not c.isprintable():
+                return c.encode("unicode_escape").decode("ascii")
+            return c
+
+        escaped_string = "".join(map(escape_char, string))
+        possible_quotes = quote_types
+        if "\n" in escaped_string:
+            possible_quotes = [q for q in possible_quotes if q in _MULTI_QUOTES]
+        possible_quotes = [q for q in possible_quotes if q not in escaped_string]
+        if not possible_quotes:
+            # If there aren't any possible_quotes, fallback to using repr
+            # on the original string. Try to use a quote from quote_types,
+            # e.g., so that we use triple quotes for docstrings.
+            string = repr(string)
+            quote = next((q for q in quote_types if string[0] in q), string[0])
+            return string[1:-1], [quote]
+        if escaped_string:
+            # Sort so that we prefer '''"''' over """\""""
+            possible_quotes.sort(key=lambda q: q[0] == escaped_string[-1])
+            # If we're using triple quotes and we'd need to escape a final
+            # quote, escape it
+            if possible_quotes[0][0] == escaped_string[-1]:
+                assert len(possible_quotes[0]) == 3
+                escaped_string = escaped_string[:-1] + "\\" + escaped_string[-1]
+        return escaped_string, possible_quotes
+
+    def _write_str_avoiding_backslashes(self, string, *, quote_types=_ALL_QUOTES):
+        """Write string literal value with a best effort attempt to avoid backslashes."""
+        string, quote_types = self._str_literal_helper(string, quote_types=quote_types)
+        quote_type = quote_types[0]
+        self.write(f"{quote_type}{string}{quote_type}")
+
+    def visit_JoinedStr(self, node):
+        self.write("f")
+        if self._avoid_backslashes:
+            self._fstring_JoinedStr(node, self.buffer_writer)
+            self._write_str_avoiding_backslashes(self.buffer)
+            return
+
+        # If we don't need to avoid backslashes globally (i.e., we only need
+        # to avoid them inside FormattedValues), it's cosmetically preferred
+        # to use escaped whitespace. That is, it's preferred to use backslashes
+        # for cases like: f"{x}\n". To accomplish this, we keep track of what
+        # in our buffer corresponds to FormattedValues and what corresponds to
+        # Constant parts of the f-string, and allow escapes accordingly.
+        buffer = []
+        for value in node.values:
+            meth = getattr(self, "_fstring_" + type(value).__name__)
+            meth(value, self.buffer_writer)
+            buffer.append((self.buffer, isinstance(value, Constant)))
+        new_buffer = []
+        quote_types = _ALL_QUOTES
+        for value, is_constant in buffer:
+            # Repeatedly narrow down the list of possible quote_types
+            value, quote_types = self._str_literal_helper(
+                value, quote_types=quote_types,
+                escape_special_whitespace=is_constant
+            )
+            new_buffer.append(value)
+        value = "".join(new_buffer)
+        quote_type = quote_types[0]
+        self.write(f"{quote_type}{value}{quote_type}")
+
+    def visit_FormattedValue(self, node):
+        self.write("f")
+        self._fstring_FormattedValue(node, self.buffer_writer)
+        self._write_str_avoiding_backslashes(self.buffer)
+
+    def _fstring_JoinedStr(self, node, write):
+        for value in node.values:
+            meth = getattr(self, "_fstring_" + type(value).__name__)
+            meth(value, write)
+
+    def _fstring_Constant(self, node, write):
+        if not isinstance(node.value, str):
+            raise ValueError("Constants inside JoinedStr should be a string.")
+        value = node.value.replace("{", "{{").replace("}", "}}")
+        write(value)
+
+    def _fstring_FormattedValue(self, node, write):
+        write("{")
+        unparser = type(self)(_avoid_backslashes=True)
+        unparser.set_precedence(_Precedence.TEST.next(), node.value)
+        expr = unparser.visit(node.value)
+        if expr.startswith("{"):
+            write(" ")  # Separate pair of opening brackets as "{ {"
+        if "\\" in expr:
+            raise ValueError("Unable to avoid backslash in f-string expression part")
+        write(expr)
+        if node.conversion != -1:
+            conversion = chr(node.conversion)
+            if conversion not in "sra":
+                raise ValueError("Unknown f-string conversion.")
+            write(f"!{conversion}")
+        if node.format_spec:
+            write(":")
+            meth = getattr(self, "_fstring_" + type(node.format_spec).__name__)
+            meth(node.format_spec, write)
+        write("}")
+
+    def visit_Name(self, node):
+        self.write(node.id)
+
+    def _write_docstring(self, node):
+        self.fill()
+        if node.kind == "u":
+            self.write("u")
+        self._write_str_avoiding_backslashes(node.value, quote_types=_MULTI_QUOTES)
+
+    def _write_constant(self, value):
+        if isinstance(value, (float, complex)):
+            # Substitute overflowing decimal literal for AST infinities,
+            # and inf - inf for NaNs.
+            self.write(
+                repr(value)
+                .replace("inf", _INFSTR)
+                .replace("nan", f"({_INFSTR}-{_INFSTR})")
+            )
+        elif self._avoid_backslashes and isinstance(value, str):
+            self._write_str_avoiding_backslashes(value)
+        else:
+            self.write(repr(value))
+
+    def visit_Constant(self, node):
+        value = node.value
+        if isinstance(value, tuple):
+            with self.delimit("(", ")"):
+                self.items_view(self._write_constant, value)
+        elif value is ...:
+            self.write("...")
+        else:
+            if node.kind == "u":
+                self.write("u")
+            self._write_constant(node.value)
+
+    def visit_List(self, node):
+        with self.delimit("[", "]"):
+            self.interleave(lambda: self.write(", "), self.traverse, node.elts)
+
+    def visit_ListComp(self, node):
+        with self.delimit("[", "]"):
+            self.traverse(node.elt)
+            for gen in node.generators:
+                self.traverse(gen)
+
+    def visit_GeneratorExp(self, node):
+        with self.delimit("(", ")"):
+            self.traverse(node.elt)
+            for gen in node.generators:
+                self.traverse(gen)
+
+    def visit_SetComp(self, node):
+        with self.delimit("{", "}"):
+            self.traverse(node.elt)
+            for gen in node.generators:
+                self.traverse(gen)
+
+    def visit_DictComp(self, node):
+        with self.delimit("{", "}"):
+            self.traverse(node.key)
+            self.write(": ")
+            self.traverse(node.value)
+            for gen in node.generators:
+                self.traverse(gen)
+
+    def visit_comprehension(self, node):
+        if node.is_async:
+            self.write(" async for ")
+        else:
+            self.write(" for ")
+        self.set_precedence(_Precedence.TUPLE, node.target)
+        self.traverse(node.target)
+        self.write(" in ")
+        self.set_precedence(_Precedence.TEST.next(), node.iter, *node.ifs)
+        self.traverse(node.iter)
+        for if_clause in node.ifs:
+            self.write(" if ")
+            self.traverse(if_clause)
+
+    def visit_IfExp(self, node):
+        with self.require_parens(_Precedence.TEST, node):
+            self.set_precedence(_Precedence.TEST.next(), node.body, node.test)
+            self.traverse(node.body)
+            self.write(" if ")
+            self.traverse(node.test)
+            self.write(" else ")
+            self.set_precedence(_Precedence.TEST, node.orelse)
+            self.traverse(node.orelse)
+
+    def visit_Set(self, node):
+        if node.elts:
+            with self.delimit("{", "}"):
+                self.interleave(lambda: self.write(", "), self.traverse, node.elts)
+        else:
+            # `{}` would be interpreted as a dictionary literal, and
+            # `set` might be shadowed. Thus:
+            self.write('{*()}')
+
+    def visit_Dict(self, node):
+        def write_key_value_pair(k, v):
+            self.traverse(k)
+            self.write(": ")
+            self.traverse(v)
+
+        def write_item(item):
+            k, v = item
+            if k is None:
+                # for dictionary unpacking operator in dicts {**{'y': 2}}
+                # see PEP 448 for details
+                self.write("**")
+                self.set_precedence(_Precedence.EXPR, v)
+                self.traverse(v)
+            else:
+                write_key_value_pair(k, v)
+
+        with self.delimit("{", "}"):
+            self.interleave(
+                lambda: self.write(", "), write_item, zip(node.keys, node.values)
+            )
+
+    def visit_Tuple(self, node):
+        with self.delimit("(", ")"):
+            self.items_view(self.traverse, node.elts)
+
+    unop = {"Invert": "~", "Not": "not", "UAdd": "+", "USub": "-"}
+    unop_precedence = {
+        "not": _Precedence.NOT,
+        "~": _Precedence.FACTOR,
+        "+": _Precedence.FACTOR,
+        "-": _Precedence.FACTOR,
+    }
+
+    def visit_UnaryOp(self, node):
+        operator = self.unop[node.op.__class__.__name__]
+        operator_precedence = self.unop_precedence[operator]
+        with self.require_parens(operator_precedence, node):
+            self.write(operator)
+            # factor prefixes (+, -, ~) shouldn't be seperated
+            # from the value they belong, (e.g: +1 instead of + 1)
+            if operator_precedence is not _Precedence.FACTOR:
+                self.write(" ")
+            self.set_precedence(operator_precedence, node.operand)
+            self.traverse(node.operand)
+
+    binop = {
+        "Add": "+",
+        "Sub": "-",
+        "Mult": "*",
+        "MatMult": "@",
+        "Div": "/",
+        "Mod": "%",
+        "LShift": "<<",
+        "RShift": ">>",
+        "BitOr": "|",
+        "BitXor": "^",
+        "BitAnd": "&",
+        "FloorDiv": "//",
+        "Pow": "**",
+    }
+
+    binop_precedence = {
+        "+": _Precedence.ARITH,
+        "-": _Precedence.ARITH,
+        "*": _Precedence.TERM,
+        "@": _Precedence.TERM,
+        "/": _Precedence.TERM,
+        "%": _Precedence.TERM,
+        "<<": _Precedence.SHIFT,
+        ">>": _Precedence.SHIFT,
+        "|": _Precedence.BOR,
+        "^": _Precedence.BXOR,
+        "&": _Precedence.BAND,
+        "//": _Precedence.TERM,
+        "**": _Precedence.POWER,
+    }
+
+    binop_rassoc = frozenset(("**",))
+    def visit_BinOp(self, node):
+        operator = self.binop[node.op.__class__.__name__]
+        operator_precedence = self.binop_precedence[operator]
+        with self.require_parens(operator_precedence, node):
+            if operator in self.binop_rassoc:
+                left_precedence = operator_precedence.next()
+                right_precedence = operator_precedence
+            else:
+                left_precedence = operator_precedence
+                right_precedence = operator_precedence.next()
+
+            self.set_precedence(left_precedence, node.left)
+            self.traverse(node.left)
+            self.write(f" {operator} ")
+            self.set_precedence(right_precedence, node.right)
+            self.traverse(node.right)
+
+    cmpops = {
+        "Eq": "==",
+        "NotEq": "!=",
+        "Lt": "<",
+        "LtE": "<=",
+        "Gt": ">",
+        "GtE": ">=",
+        "Is": "is",
+        "IsNot": "is not",
+        "In": "in",
+        "NotIn": "not in",
+    }
+
+    def visit_Compare(self, node):
+        with self.require_parens(_Precedence.CMP, node):
+            self.set_precedence(_Precedence.CMP.next(), node.left, *node.comparators)
+            self.traverse(node.left)
+            for o, e in zip(node.ops, node.comparators):
+                self.write(" " + self.cmpops[o.__class__.__name__] + " ")
+                self.traverse(e)
+
+    boolops = {"And": "and", "Or": "or"}
+    boolop_precedence = {"and": _Precedence.AND, "or": _Precedence.OR}
+
+    def visit_BoolOp(self, node):
+        operator = self.boolops[node.op.__class__.__name__]
+        operator_precedence = self.boolop_precedence[operator]
+
+        def increasing_level_traverse(node):
+            nonlocal operator_precedence
+            operator_precedence = operator_precedence.next()
+            self.set_precedence(operator_precedence, node)
+            self.traverse(node)
+
+        with self.require_parens(operator_precedence, node):
+            s = f" {operator} "
+            self.interleave(lambda: self.write(s), increasing_level_traverse, node.values)
+
+    def visit_Attribute(self, node):
+        self.set_precedence(_Precedence.ATOM, node.value)
+        self.traverse(node.value)
+        # Special case: 3.__abs__() is a syntax error, so if node.value
+        # is an integer literal then we need to either parenthesize
+        # it or add an extra space to get 3 .__abs__().
+        if isinstance(node.value, Constant) and isinstance(node.value.value, int):
+            self.write(" ")
+        self.write(".")
+        self.write(node.attr)
+
+    def visit_Call(self, node):
+        self.set_precedence(_Precedence.ATOM, node.func)
+        self.traverse(node.func)
+        with self.delimit("(", ")"):
+            comma = False
+            for e in node.args:
+                if comma:
+                    self.write(", ")
+                else:
+                    comma = True
+                self.traverse(e)
+            for e in node.keywords:
+                if comma:
+                    self.write(", ")
+                else:
+                    comma = True
+                self.traverse(e)
+
+    def visit_Subscript(self, node):
+        def is_simple_tuple(slice_value):
+            # when unparsing a non-empty tuple, the parentheses can be safely
+            # omitted if there aren't any elements that explicitly requires
+            # parentheses (such as starred expressions).
+            return (
+                isinstance(slice_value, Tuple)
+                and slice_value.elts
+                and not any(isinstance(elt, Starred) for elt in slice_value.elts)
+            )
+
+        self.set_precedence(_Precedence.ATOM, node.value)
+        self.traverse(node.value)
+        with self.delimit("[", "]"):
+            if is_simple_tuple(node.slice):
+                self.items_view(self.traverse, node.slice.elts)
+            else:
+                self.traverse(node.slice)
+
+    def visit_Starred(self, node):
+        self.write("*")
+        self.set_precedence(_Precedence.EXPR, node.value)
+        self.traverse(node.value)
+
+    def visit_Ellipsis(self, node):
+        self.write("...")
+
+    def visit_Slice(self, node):
+        if node.lower:
+            self.traverse(node.lower)
+        self.write(":")
+        if node.upper:
+            self.traverse(node.upper)
+        if node.step:
+            self.write(":")
+            self.traverse(node.step)
+
+    def visit_Match(self, node):
+        self.fill("match ")
+        self.traverse(node.subject)
+        with self.block():
+            for case in node.cases:
+                self.traverse(case)
+
+    def visit_arg(self, node):
+        self.write(node.arg)
+        if node.annotation:
+            self.write(": ")
+            self.traverse(node.annotation)
+
+    def visit_arguments(self, node):
+        first = True
+        # normal arguments
+        all_args = node.posonlyargs + node.args
+        defaults = [None] * (len(all_args) - len(node.defaults)) + node.defaults
+        for index, elements in enumerate(zip(all_args, defaults), 1):
+            a, d = elements
+            if first:
+                first = False
+            else:
+                self.write(", ")
+            self.traverse(a)
+            if d:
+                self.write("=")
+                self.traverse(d)
+            if index == len(node.posonlyargs):
+                self.write(", /")
+
+        # varargs, or bare '*' if no varargs but keyword-only arguments present
+        if node.vararg or node.kwonlyargs:
+            if first:
+                first = False
+            else:
+                self.write(", ")
+            self.write("*")
+            if node.vararg:
+                self.write(node.vararg.arg)
+                if node.vararg.annotation:
+                    self.write(": ")
+                    self.traverse(node.vararg.annotation)
+
+        # keyword-only arguments
+        if node.kwonlyargs:
+            for a, d in zip(node.kwonlyargs, node.kw_defaults):
+                self.write(", ")
+                self.traverse(a)
+                if d:
+                    self.write("=")
+                    self.traverse(d)
+
+        # kwargs
+        if node.kwarg:
+            if first:
+                first = False
+            else:
+                self.write(", ")
+            self.write("**" + node.kwarg.arg)
+            if node.kwarg.annotation:
+                self.write(": ")
+                self.traverse(node.kwarg.annotation)
+
+    def visit_keyword(self, node):
+        if node.arg is None:
+            self.write("**")
+        else:
+            self.write(node.arg)
+            self.write("=")
+        self.traverse(node.value)
+
+    def visit_Lambda(self, node):
+        with self.require_parens(_Precedence.TEST, node):
+            self.write("lambda ")
+            self.traverse(node.args)
+            self.write(": ")
+            self.set_precedence(_Precedence.TEST, node.body)
+            self.traverse(node.body)
+
+    def visit_alias(self, node):
+        self.write(node.name)
+        if node.asname:
+            self.write(" as " + node.asname)
+
+    def visit_withitem(self, node):
+        self.traverse(node.context_expr)
+        if node.optional_vars:
+            self.write(" as ")
+            self.traverse(node.optional_vars)
+
+    def visit_match_case(self, node):
+        self.fill("case ")
+        self.traverse(node.pattern)
+        if node.guard:
+            self.write(" if ")
+            self.traverse(node.guard)
+        with self.block():
+            self.traverse(node.body)
+
+    def visit_MatchValue(self, node):
+        self.traverse(node.value)
+
+    def visit_MatchSingleton(self, node):
+        self._write_constant(node.value)
+
+    def visit_MatchSequence(self, node):
+        with self.delimit("[", "]"):
+            self.interleave(
+                lambda: self.write(", "), self.traverse, node.patterns
+            )
+
+    def visit_MatchStar(self, node):
+        name = node.name
+        if name is None:
+            name = "_"
+        self.write(f"*{name}")
+
+    def visit_MatchMapping(self, node):
+        def write_key_pattern_pair(pair):
+            k, p = pair
+            self.traverse(k)
+            self.write(": ")
+            self.traverse(p)
+
+        with self.delimit("{", "}"):
+            keys = node.keys
+            self.interleave(
+                lambda: self.write(", "),
+                write_key_pattern_pair,
+                zip(keys, node.patterns, strict=True),
+            )
+            rest = node.rest
+            if rest is not None:
+                if keys:
+                    self.write(", ")
+                self.write(f"**{rest}")
+
+    def visit_MatchClass(self, node):
+        self.set_precedence(_Precedence.ATOM, node.cls)
+        self.traverse(node.cls)
+        with self.delimit("(", ")"):
+            patterns = node.patterns
+            self.interleave(
+                lambda: self.write(", "), self.traverse, patterns
+            )
+            attrs = node.kwd_attrs
+            if attrs:
+                def write_attr_pattern(pair):
+                    attr, pattern = pair
+                    self.write(f"{attr}=")
+                    self.traverse(pattern)
+
+                if patterns:
+                    self.write(", ")
+                self.interleave(
+                    lambda: self.write(", "),
+                    write_attr_pattern,
+                    zip(attrs, node.kwd_patterns, strict=True),
+                )
+
+    def visit_MatchAs(self, node):
+        name = node.name
+        pattern = node.pattern
+        if name is None:
+            self.write("_")
+        elif pattern is None:
+            self.write(node.name)
+        else:
+            with self.require_parens(_Precedence.TEST, node):
+                self.set_precedence(_Precedence.BOR, node.pattern)
+                self.traverse(node.pattern)
+                self.write(f" as {node.name}")
+
+    def visit_MatchOr(self, node):
+        with self.require_parens(_Precedence.BOR, node):
+            self.set_precedence(_Precedence.BOR.next(), *node.patterns)
+            self.interleave(lambda: self.write(" | "), self.traverse, node.patterns)
+
+def unparse(ast_obj):
+    unparser = _Unparser()
+    return unparser.visit(ast_obj)
+
+
+def main():
+    import argparse
+
+    parser = argparse.ArgumentParser(prog='python -m ast')
+    parser.add_argument('infile', type=argparse.FileType(mode='rb'), nargs='?',
+                        default='-',
+                        help='the file to parse; defaults to stdin')
+    parser.add_argument('-m', '--mode', default='exec',
+                        choices=('exec', 'single', 'eval', 'func_type'),
+                        help='specify what kind of code must be parsed')
+    parser.add_argument('--no-type-comments', default=True, action='store_false',
+                        help="don't add information about type comments")
+    parser.add_argument('-a', '--include-attributes', action='store_true',
+                        help='include attributes such as line numbers and '
+                             'column offsets')
+    parser.add_argument('-i', '--indent', type=int, default=3,
+                        help='indentation of nodes (number of spaces)')
+    args = parser.parse_args()
+
+    with args.infile as infile:
+        source = infile.read()
+    tree = parse(source, args.infile.name, args.mode, type_comments=args.no_type_comments)
+    print(dump(tree, include_attributes=args.include_attributes, indent=args.indent))
+
+if __name__ == '__main__':
+    main()

evalkit_tf446/lib/python3.10/binhex.py

@@ -0,0 +1,502 @@
+"""Macintosh binhex compression/decompression.
+
+easy interface:
+binhex(inputfilename, outputfilename)
+hexbin(inputfilename, outputfilename)
+"""
+
+#
+# Jack Jansen, CWI, August 1995.
+#
+# The module is supposed to be as compatible as possible. Especially the
+# easy interface should work "as expected" on any platform.
+# XXXX Note: currently, textfiles appear in mac-form on all platforms.
+# We seem to lack a simple character-translate in python.
+# (we should probably use ISO-Latin-1 on all but the mac platform).
+# XXXX The simple routines are too simple: they expect to hold the complete
+# files in-core. Should be fixed.
+# XXXX It would be nice to handle AppleDouble format on unix
+# (for servers serving macs).
+# XXXX I don't understand what happens when you get 0x90 times the same byte on
+# input. The resulting code (xx 90 90) would appear to be interpreted as an
+# escaped *value* of 0x90. All coders I've seen appear to ignore this nicety...
+#
+import binascii
+import contextlib
+import io
+import os
+import struct
+import warnings
+
+warnings.warn('the binhex module is deprecated', DeprecationWarning,
+              stacklevel=2)
+
+
+__all__ = ["binhex","hexbin","Error"]
+
+class Error(Exception):
+    pass
+
+# States (what have we written)
+_DID_HEADER = 0
+_DID_DATA = 1
+
+# Various constants
+REASONABLY_LARGE = 32768  # Minimal amount we pass the rle-coder
+LINELEN = 64
+RUNCHAR = b"\x90"
+
+#
+# This code is no longer byte-order dependent
+
+
+class FInfo:
+    def __init__(self):
+        self.Type = '????'
+        self.Creator = '????'
+        self.Flags = 0
+
+def getfileinfo(name):
+    finfo = FInfo()
+    with io.open(name, 'rb') as fp:
+        # Quick check for textfile
+        data = fp.read(512)
+        if 0 not in data:
+            finfo.Type = 'TEXT'
+        fp.seek(0, 2)
+        dsize = fp.tell()
+    dir, file = os.path.split(name)
+    file = file.replace(':', '-', 1)
+    return file, finfo, dsize, 0
+
+class openrsrc:
+    def __init__(self, *args):
+        pass
+
+    def read(self, *args):
+        return b''
+
+    def write(self, *args):
+        pass
+
+    def close(self):
+        pass
+
+
+# DeprecationWarning is already emitted on "import binhex". There is no need
+# to repeat the warning at each call to deprecated binascii functions.
+@contextlib.contextmanager
+def _ignore_deprecation_warning():
+    with warnings.catch_warnings():
+        warnings.filterwarnings('ignore', '', DeprecationWarning)
+        yield
+
+
+class _Hqxcoderengine:
+    """Write data to the coder in 3-byte chunks"""
+
+    def __init__(self, ofp):
+        self.ofp = ofp
+        self.data = b''
+        self.hqxdata = b''
+        self.linelen = LINELEN - 1
+
+    def write(self, data):
+        self.data = self.data + data
+        datalen = len(self.data)
+        todo = (datalen // 3) * 3
+        data = self.data[:todo]
+        self.data = self.data[todo:]
+        if not data:
+            return
+        with _ignore_deprecation_warning():
+            self.hqxdata = self.hqxdata + binascii.b2a_hqx(data)
+        self._flush(0)
+
+    def _flush(self, force):
+        first = 0
+        while first <= len(self.hqxdata) - self.linelen:
+            last = first + self.linelen
+            self.ofp.write(self.hqxdata[first:last] + b'\r')
+            self.linelen = LINELEN
+            first = last
+        self.hqxdata = self.hqxdata[first:]
+        if force:
+            self.ofp.write(self.hqxdata + b':\r')
+
+    def close(self):
+        if self.data:
+            with _ignore_deprecation_warning():
+                self.hqxdata = self.hqxdata + binascii.b2a_hqx(self.data)
+        self._flush(1)
+        self.ofp.close()
+        del self.ofp
+
+class _Rlecoderengine:
+    """Write data to the RLE-coder in suitably large chunks"""
+
+    def __init__(self, ofp):
+        self.ofp = ofp
+        self.data = b''
+
+    def write(self, data):
+        self.data = self.data + data
+        if len(self.data) < REASONABLY_LARGE:
+            return
+        with _ignore_deprecation_warning():
+            rledata = binascii.rlecode_hqx(self.data)
+        self.ofp.write(rledata)
+        self.data = b''
+
+    def close(self):
+        if self.data:
+            with _ignore_deprecation_warning():
+                rledata = binascii.rlecode_hqx(self.data)
+            self.ofp.write(rledata)
+        self.ofp.close()
+        del self.ofp
+
+class BinHex:
+    def __init__(self, name_finfo_dlen_rlen, ofp):
+        name, finfo, dlen, rlen = name_finfo_dlen_rlen
+        close_on_error = False
+        if isinstance(ofp, str):
+            ofname = ofp
+            ofp = io.open(ofname, 'wb')
+            close_on_error = True
+        try:
+            ofp.write(b'(This file must be converted with BinHex 4.0)\r\r:')
+            hqxer = _Hqxcoderengine(ofp)
+            self.ofp = _Rlecoderengine(hqxer)
+            self.crc = 0
+            if finfo is None:
+                finfo = FInfo()
+            self.dlen = dlen
+            self.rlen = rlen
+            self._writeinfo(name, finfo)
+            self.state = _DID_HEADER
+        except:
+            if close_on_error:
+                ofp.close()
+            raise
+
+    def _writeinfo(self, name, finfo):
+        nl = len(name)
+        if nl > 63:
+            raise Error('Filename too long')
+        d = bytes([nl]) + name.encode("latin-1") + b'\0'
+        tp, cr = finfo.Type, finfo.Creator
+        if isinstance(tp, str):
+            tp = tp.encode("latin-1")
+        if isinstance(cr, str):
+            cr = cr.encode("latin-1")
+        d2 = tp + cr
+
+        # Force all structs to be packed with big-endian
+        d3 = struct.pack('>h', finfo.Flags)
+        d4 = struct.pack('>ii', self.dlen, self.rlen)
+        info = d + d2 + d3 + d4
+        self._write(info)
+        self._writecrc()
+
+    def _write(self, data):
+        self.crc = binascii.crc_hqx(data, self.crc)
+        self.ofp.write(data)
+
+    def _writecrc(self):
+        # XXXX Should this be here??
+        # self.crc = binascii.crc_hqx('\0\0', self.crc)
+        if self.crc < 0:
+            fmt = '>h'
+        else:
+            fmt = '>H'
+        self.ofp.write(struct.pack(fmt, self.crc))
+        self.crc = 0
+
+    def write(self, data):
+        if self.state != _DID_HEADER:
+            raise Error('Writing data at the wrong time')
+        self.dlen = self.dlen - len(data)
+        self._write(data)
+
+    def close_data(self):
+        if self.dlen != 0:
+            raise Error('Incorrect data size, diff=%r' % (self.rlen,))
+        self._writecrc()
+        self.state = _DID_DATA
+
+    def write_rsrc(self, data):
+        if self.state < _DID_DATA:
+            self.close_data()
+        if self.state != _DID_DATA:
+            raise Error('Writing resource data at the wrong time')
+        self.rlen = self.rlen - len(data)
+        self._write(data)
+
+    def close(self):
+        if self.state is None:
+            return
+        try:
+            if self.state < _DID_DATA:
+                self.close_data()
+            if self.state != _DID_DATA:
+                raise Error('Close at the wrong time')
+            if self.rlen != 0:
+                raise Error("Incorrect resource-datasize, diff=%r" % (self.rlen,))
+            self._writecrc()
+        finally:
+            self.state = None
+            ofp = self.ofp
+            del self.ofp
+            ofp.close()
+
+def binhex(inp, out):
+    """binhex(infilename, outfilename): create binhex-encoded copy of a file"""
+    finfo = getfileinfo(inp)
+    ofp = BinHex(finfo, out)
+
+    with io.open(inp, 'rb') as ifp:
+        # XXXX Do textfile translation on non-mac systems
+        while True:
+            d = ifp.read(128000)
+            if not d: break
+            ofp.write(d)
+        ofp.close_data()
+
+    ifp = openrsrc(inp, 'rb')
+    while True:
+        d = ifp.read(128000)
+        if not d: break
+        ofp.write_rsrc(d)
+    ofp.close()
+    ifp.close()
+
+class _Hqxdecoderengine:
+    """Read data via the decoder in 4-byte chunks"""
+
+    def __init__(self, ifp):
+        self.ifp = ifp
+        self.eof = 0
+
+    def read(self, totalwtd):
+        """Read at least wtd bytes (or until EOF)"""
+        decdata = b''
+        wtd = totalwtd
+        #
+        # The loop here is convoluted, since we don't really now how
+        # much to decode: there may be newlines in the incoming data.
+        while wtd > 0:
+            if self.eof: return decdata
+            wtd = ((wtd + 2) // 3) * 4
+            data = self.ifp.read(wtd)
+            #
+            # Next problem: there may not be a complete number of
+            # bytes in what we pass to a2b. Solve by yet another
+            # loop.
+            #
+            while True:
+                try:
+                    with _ignore_deprecation_warning():
+                        decdatacur, self.eof = binascii.a2b_hqx(data)
+                    break
+                except binascii.Incomplete:
+                    pass
+                newdata = self.ifp.read(1)
+                if not newdata:
+                    raise Error('Premature EOF on binhex file')
+                data = data + newdata
+            decdata = decdata + decdatacur
+            wtd = totalwtd - len(decdata)
+            if not decdata and not self.eof:
+                raise Error('Premature EOF on binhex file')
+        return decdata
+
+    def close(self):
+        self.ifp.close()
+
+class _Rledecoderengine:
+    """Read data via the RLE-coder"""
+
+    def __init__(self, ifp):
+        self.ifp = ifp
+        self.pre_buffer = b''
+        self.post_buffer = b''
+        self.eof = 0
+
+    def read(self, wtd):
+        if wtd > len(self.post_buffer):
+            self._fill(wtd - len(self.post_buffer))
+        rv = self.post_buffer[:wtd]
+        self.post_buffer = self.post_buffer[wtd:]
+        return rv
+
+    def _fill(self, wtd):
+        self.pre_buffer = self.pre_buffer + self.ifp.read(wtd + 4)
+        if self.ifp.eof:
+            with _ignore_deprecation_warning():
+                self.post_buffer = self.post_buffer + \
+                    binascii.rledecode_hqx(self.pre_buffer)
+            self.pre_buffer = b''
+            return
+
+        #
+        # Obfuscated code ahead. We have to take care that we don't
+        # end up with an orphaned RUNCHAR later on. So, we keep a couple
+        # of bytes in the buffer, depending on what the end of
+        # the buffer looks like:
+        # '\220\0\220' - Keep 3 bytes: repeated \220 (escaped as \220\0)
+        # '?\220' - Keep 2 bytes: repeated something-else
+        # '\220\0' - Escaped \220: Keep 2 bytes.
+        # '?\220?' - Complete repeat sequence: decode all
+        # otherwise: keep 1 byte.
+        #
+        mark = len(self.pre_buffer)
+        if self.pre_buffer[-3:] == RUNCHAR + b'\0' + RUNCHAR:
+            mark = mark - 3
+        elif self.pre_buffer[-1:] == RUNCHAR:
+            mark = mark - 2
+        elif self.pre_buffer[-2:] == RUNCHAR + b'\0':
+            mark = mark - 2
+        elif self.pre_buffer[-2:-1] == RUNCHAR:
+            pass # Decode all
+        else:
+            mark = mark - 1
+
+        with _ignore_deprecation_warning():
+            self.post_buffer = self.post_buffer + \
+                binascii.rledecode_hqx(self.pre_buffer[:mark])
+        self.pre_buffer = self.pre_buffer[mark:]
+
+    def close(self):
+        self.ifp.close()
+
+class HexBin:
+    def __init__(self, ifp):
+        if isinstance(ifp, str):
+            ifp = io.open(ifp, 'rb')
+        #
+        # Find initial colon.
+        #
+        while True:
+            ch = ifp.read(1)
+            if not ch:
+                raise Error("No binhex data found")
+            # Cater for \r\n terminated lines (which show up as \n\r, hence
+            # all lines start with \r)
+            if ch == b'\r':
+                continue
+            if ch == b':':
+                break
+
+        hqxifp = _Hqxdecoderengine(ifp)
+        self.ifp = _Rledecoderengine(hqxifp)
+        self.crc = 0
+        self._readheader()
+
+    def _read(self, len):
+        data = self.ifp.read(len)
+        self.crc = binascii.crc_hqx(data, self.crc)
+        return data
+
+    def _checkcrc(self):
+        filecrc = struct.unpack('>h', self.ifp.read(2))[0] & 0xffff
+        #self.crc = binascii.crc_hqx('\0\0', self.crc)
+        # XXXX Is this needed??
+        self.crc = self.crc & 0xffff
+        if filecrc != self.crc:
+            raise Error('CRC error, computed %x, read %x'
+                        % (self.crc, filecrc))
+        self.crc = 0
+
+    def _readheader(self):
+        len = self._read(1)
+        fname = self._read(ord(len))
+        rest = self._read(1 + 4 + 4 + 2 + 4 + 4)
+        self._checkcrc()
+
+        type = rest[1:5]
+        creator = rest[5:9]
+        flags = struct.unpack('>h', rest[9:11])[0]
+        self.dlen = struct.unpack('>l', rest[11:15])[0]
+        self.rlen = struct.unpack('>l', rest[15:19])[0]
+
+        self.FName = fname
+        self.FInfo = FInfo()
+        self.FInfo.Creator = creator
+        self.FInfo.Type = type
+        self.FInfo.Flags = flags
+
+        self.state = _DID_HEADER
+
+    def read(self, *n):
+        if self.state != _DID_HEADER:
+            raise Error('Read data at wrong time')
+        if n:
+            n = n[0]
+            n = min(n, self.dlen)
+        else:
+            n = self.dlen
+        rv = b''
+        while len(rv) < n:
+            rv = rv + self._read(n-len(rv))
+        self.dlen = self.dlen - n
+        return rv
+
+    def close_data(self):
+        if self.state != _DID_HEADER:
+            raise Error('close_data at wrong time')
+        if self.dlen:
+            dummy = self._read(self.dlen)
+        self._checkcrc()
+        self.state = _DID_DATA
+
+    def read_rsrc(self, *n):
+        if self.state == _DID_HEADER:
+            self.close_data()
+        if self.state != _DID_DATA:
+            raise Error('Read resource data at wrong time')
+        if n:
+            n = n[0]
+            n = min(n, self.rlen)
+        else:
+            n = self.rlen
+        self.rlen = self.rlen - n
+        return self._read(n)
+
+    def close(self):
+        if self.state is None:
+            return
+        try:
+            if self.rlen:
+                dummy = self.read_rsrc(self.rlen)
+            self._checkcrc()
+        finally:
+            self.state = None
+            self.ifp.close()
+
+def hexbin(inp, out):
+    """hexbin(infilename, outfilename) - Decode binhexed file"""
+    ifp = HexBin(inp)
+    finfo = ifp.FInfo
+    if not out:
+        out = ifp.FName
+
+    with io.open(out, 'wb') as ofp:
+        # XXXX Do translation on non-mac systems
+        while True:
+            d = ifp.read(128000)
+            if not d: break
+            ofp.write(d)
+    ifp.close_data()
+
+    d = ifp.read_rsrc(128000)
+    if d:
+        ofp = openrsrc(out, 'wb')
+        ofp.write(d)
+        while True:
+            d = ifp.read_rsrc(128000)
+            if not d: break
+            ofp.write(d)
+        ofp.close()
+
+    ifp.close()

evalkit_tf446/lib/python3.10/bz2.py

@@ -0,0 +1,344 @@
+"""Interface to the libbzip2 compression library.
+
+This module provides a file interface, classes for incremental
+(de)compression, and functions for one-shot (de)compression.
+"""
+
+__all__ = ["BZ2File", "BZ2Compressor", "BZ2Decompressor",
+           "open", "compress", "decompress"]
+
+__author__ = "Nadeem Vawda <nadeem.vawda@gmail.com>"
+
+from builtins import open as _builtin_open
+import io
+import os
+import _compression
+
+from _bz2 import BZ2Compressor, BZ2Decompressor
+
+
+_MODE_CLOSED   = 0
+_MODE_READ     = 1
+# Value 2 no longer used
+_MODE_WRITE    = 3
+
+
+class BZ2File(_compression.BaseStream):
+
+    """A file object providing transparent bzip2 (de)compression.
+
+    A BZ2File can act as a wrapper for an existing file object, or refer
+    directly to a named file on disk.
+
+    Note that BZ2File provides a *binary* file interface - data read is
+    returned as bytes, and data to be written should be given as bytes.
+    """
+
+    def __init__(self, filename, mode="r", *, compresslevel=9):
+        """Open a bzip2-compressed file.
+
+        If filename is a str, bytes, or PathLike object, it gives the
+        name of the file to be opened. Otherwise, it should be a file
+        object, which will be used to read or write the compressed data.
+
+        mode can be 'r' for reading (default), 'w' for (over)writing,
+        'x' for creating exclusively, or 'a' for appending. These can
+        equivalently be given as 'rb', 'wb', 'xb', and 'ab'.
+
+        If mode is 'w', 'x' or 'a', compresslevel can be a number between 1
+        and 9 specifying the level of compression: 1 produces the least
+        compression, and 9 (default) produces the most compression.
+
+        If mode is 'r', the input file may be the concatenation of
+        multiple compressed streams.
+        """
+        self._fp = None
+        self._closefp = False
+        self._mode = _MODE_CLOSED
+
+        if not (1 <= compresslevel <= 9):
+            raise ValueError("compresslevel must be between 1 and 9")
+
+        if mode in ("", "r", "rb"):
+            mode = "rb"
+            mode_code = _MODE_READ
+        elif mode in ("w", "wb"):
+            mode = "wb"
+            mode_code = _MODE_WRITE
+            self._compressor = BZ2Compressor(compresslevel)
+        elif mode in ("x", "xb"):
+            mode = "xb"
+            mode_code = _MODE_WRITE
+            self._compressor = BZ2Compressor(compresslevel)
+        elif mode in ("a", "ab"):
+            mode = "ab"
+            mode_code = _MODE_WRITE
+            self._compressor = BZ2Compressor(compresslevel)
+        else:
+            raise ValueError("Invalid mode: %r" % (mode,))
+
+        if isinstance(filename, (str, bytes, os.PathLike)):
+            self._fp = _builtin_open(filename, mode)
+            self._closefp = True
+            self._mode = mode_code
+        elif hasattr(filename, "read") or hasattr(filename, "write"):
+            self._fp = filename
+            self._mode = mode_code
+        else:
+            raise TypeError("filename must be a str, bytes, file or PathLike object")
+
+        if self._mode == _MODE_READ:
+            raw = _compression.DecompressReader(self._fp,
+                BZ2Decompressor, trailing_error=OSError)
+            self._buffer = io.BufferedReader(raw)
+        else:
+            self._pos = 0
+
+    def close(self):
+        """Flush and close the file.
+
+        May be called more than once without error. Once the file is
+        closed, any other operation on it will raise a ValueError.
+        """
+        if self._mode == _MODE_CLOSED:
+            return
+        try:
+            if self._mode == _MODE_READ:
+                self._buffer.close()
+            elif self._mode == _MODE_WRITE:
+                self._fp.write(self._compressor.flush())
+                self._compressor = None
+        finally:
+            try:
+                if self._closefp:
+                    self._fp.close()
+            finally:
+                self._fp = None
+                self._closefp = False
+                self._mode = _MODE_CLOSED
+                self._buffer = None
+
+    @property
+    def closed(self):
+        """True if this file is closed."""
+        return self._mode == _MODE_CLOSED
+
+    def fileno(self):
+        """Return the file descriptor for the underlying file."""
+        self._check_not_closed()
+        return self._fp.fileno()
+
+    def seekable(self):
+        """Return whether the file supports seeking."""
+        return self.readable() and self._buffer.seekable()
+
+    def readable(self):
+        """Return whether the file was opened for reading."""
+        self._check_not_closed()
+        return self._mode == _MODE_READ
+
+    def writable(self):
+        """Return whether the file was opened for writing."""
+        self._check_not_closed()
+        return self._mode == _MODE_WRITE
+
+    def peek(self, n=0):
+        """Return buffered data without advancing the file position.
+
+        Always returns at least one byte of data, unless at EOF.
+        The exact number of bytes returned is unspecified.
+        """
+        self._check_can_read()
+        # Relies on the undocumented fact that BufferedReader.peek()
+        # always returns at least one byte (except at EOF), independent
+        # of the value of n
+        return self._buffer.peek(n)
+
+    def read(self, size=-1):
+        """Read up to size uncompressed bytes from the file.
+
+        If size is negative or omitted, read until EOF is reached.
+        Returns b'' if the file is already at EOF.
+        """
+        self._check_can_read()
+        return self._buffer.read(size)
+
+    def read1(self, size=-1):
+        """Read up to size uncompressed bytes, while trying to avoid
+        making multiple reads from the underlying stream. Reads up to a
+        buffer's worth of data if size is negative.
+
+        Returns b'' if the file is at EOF.
+        """
+        self._check_can_read()
+        if size < 0:
+            size = io.DEFAULT_BUFFER_SIZE
+        return self._buffer.read1(size)
+
+    def readinto(self, b):
+        """Read bytes into b.
+
+        Returns the number of bytes read (0 for EOF).
+        """
+        self._check_can_read()
+        return self._buffer.readinto(b)
+
+    def readline(self, size=-1):
+        """Read a line of uncompressed bytes from the file.
+
+        The terminating newline (if present) is retained. If size is
+        non-negative, no more than size bytes will be read (in which
+        case the line may be incomplete). Returns b'' if already at EOF.
+        """
+        if not isinstance(size, int):
+            if not hasattr(size, "__index__"):
+                raise TypeError("Integer argument expected")
+            size = size.__index__()
+        self._check_can_read()
+        return self._buffer.readline(size)
+
+    def readlines(self, size=-1):
+        """Read a list of lines of uncompressed bytes from the file.
+
+        size can be specified to control the number of lines read: no
+        further lines will be read once the total size of the lines read
+        so far equals or exceeds size.
+        """
+        if not isinstance(size, int):
+            if not hasattr(size, "__index__"):
+                raise TypeError("Integer argument expected")
+            size = size.__index__()
+        self._check_can_read()
+        return self._buffer.readlines(size)
+
+    def write(self, data):
+        """Write a byte string to the file.
+
+        Returns the number of uncompressed bytes written, which is
+        always the length of data in bytes. Note that due to buffering,
+        the file on disk may not reflect the data written until close()
+        is called.
+        """
+        self._check_can_write()
+        if isinstance(data, (bytes, bytearray)):
+            length = len(data)
+        else:
+            # accept any data that supports the buffer protocol
+            data = memoryview(data)
+            length = data.nbytes
+
+        compressed = self._compressor.compress(data)
+        self._fp.write(compressed)
+        self._pos += length
+        return length
+
+    def writelines(self, seq):
+        """Write a sequence of byte strings to the file.
+
+        Returns the number of uncompressed bytes written.
+        seq can be any iterable yielding byte strings.
+
+        Line separators are not added between the written byte strings.
+        """
+        return _compression.BaseStream.writelines(self, seq)
+
+    def seek(self, offset, whence=io.SEEK_SET):
+        """Change the file position.
+
+        The new position is specified by offset, relative to the
+        position indicated by whence. Values for whence are:
+
+            0: start of stream (default); offset must not be negative
+            1: current stream position
+            2: end of stream; offset must not be positive
+
+        Returns the new file position.
+
+        Note that seeking is emulated, so depending on the parameters,
+        this operation may be extremely slow.
+        """
+        self._check_can_seek()
+        return self._buffer.seek(offset, whence)
+
+    def tell(self):
+        """Return the current file position."""
+        self._check_not_closed()
+        if self._mode == _MODE_READ:
+            return self._buffer.tell()
+        return self._pos
+
+
+def open(filename, mode="rb", compresslevel=9,
+         encoding=None, errors=None, newline=None):
+    """Open a bzip2-compressed file in binary or text mode.
+
+    The filename argument can be an actual filename (a str, bytes, or
+    PathLike object), or an existing file object to read from or write
+    to.
+
+    The mode argument can be "r", "rb", "w", "wb", "x", "xb", "a" or
+    "ab" for binary mode, or "rt", "wt", "xt" or "at" for text mode.
+    The default mode is "rb", and the default compresslevel is 9.
+
+    For binary mode, this function is equivalent to the BZ2File
+    constructor: BZ2File(filename, mode, compresslevel). In this case,
+    the encoding, errors and newline arguments must not be provided.
+
+    For text mode, a BZ2File object is created, and wrapped in an
+    io.TextIOWrapper instance with the specified encoding, error
+    handling behavior, and line ending(s).
+
+    """
+    if "t" in mode:
+        if "b" in mode:
+            raise ValueError("Invalid mode: %r" % (mode,))
+    else:
+        if encoding is not None:
+            raise ValueError("Argument 'encoding' not supported in binary mode")
+        if errors is not None:
+            raise ValueError("Argument 'errors' not supported in binary mode")
+        if newline is not None:
+            raise ValueError("Argument 'newline' not supported in binary mode")
+
+    bz_mode = mode.replace("t", "")
+    binary_file = BZ2File(filename, bz_mode, compresslevel=compresslevel)
+
+    if "t" in mode:
+        encoding = io.text_encoding(encoding)
+        return io.TextIOWrapper(binary_file, encoding, errors, newline)
+    else:
+        return binary_file
+
+
+def compress(data, compresslevel=9):
+    """Compress a block of data.
+
+    compresslevel, if given, must be a number between 1 and 9.
+
+    For incremental compression, use a BZ2Compressor object instead.
+    """
+    comp = BZ2Compressor(compresslevel)
+    return comp.compress(data) + comp.flush()
+
+
+def decompress(data):
+    """Decompress a block of data.
+
+    For incremental decompression, use a BZ2Decompressor object instead.
+    """
+    results = []
+    while data:
+        decomp = BZ2Decompressor()
+        try:
+            res = decomp.decompress(data)
+        except OSError:
+            if results:
+                break  # Leftover data is not a valid bzip2 stream; ignore it.
+            else:
+                raise  # Error on the first iteration; bail out.
+        results.append(res)
+        if not decomp.eof:
+            raise ValueError("Compressed data ended before the "
+                             "end-of-stream marker was reached")
+        data = decomp.unused_data
+    return b"".join(results)

evalkit_tf446/lib/python3.10/cProfile.py

@@ -0,0 +1,191 @@
+#! /usr/bin/env python3
+
+"""Python interface for the 'lsprof' profiler.
+   Compatible with the 'profile' module.
+"""
+
+__all__ = ["run", "runctx", "Profile"]
+
+import _lsprof
+import io
+import profile as _pyprofile
+
+# ____________________________________________________________
+# Simple interface
+
+def run(statement, filename=None, sort=-1):
+    return _pyprofile._Utils(Profile).run(statement, filename, sort)
+
+def runctx(statement, globals, locals, filename=None, sort=-1):
+    return _pyprofile._Utils(Profile).runctx(statement, globals, locals,
+                                             filename, sort)
+
+run.__doc__ = _pyprofile.run.__doc__
+runctx.__doc__ = _pyprofile.runctx.__doc__
+
+# ____________________________________________________________
+
+class Profile(_lsprof.Profiler):
+    """Profile(timer=None, timeunit=None, subcalls=True, builtins=True)
+
+    Builds a profiler object using the specified timer function.
+    The default timer is a fast built-in one based on real time.
+    For custom timer functions returning integers, timeunit can
+    be a float specifying a scale (i.e. how long each integer unit
+    is, in seconds).
+    """
+
+    # Most of the functionality is in the base class.
+    # This subclass only adds convenient and backward-compatible methods.
+
+    def print_stats(self, sort=-1):
+        import pstats
+        pstats.Stats(self).strip_dirs().sort_stats(sort).print_stats()
+
+    def dump_stats(self, file):
+        import marshal
+        with open(file, 'wb') as f:
+            self.create_stats()
+            marshal.dump(self.stats, f)
+
+    def create_stats(self):
+        self.disable()
+        self.snapshot_stats()
+
+    def snapshot_stats(self):
+        entries = self.getstats()
+        self.stats = {}
+        callersdicts = {}
+        # call information
+        for entry in entries:
+            func = label(entry.code)
+            nc = entry.callcount         # ncalls column of pstats (before '/')
+            cc = nc - entry.reccallcount # ncalls column of pstats (after '/')
+            tt = entry.inlinetime        # tottime column of pstats
+            ct = entry.totaltime         # cumtime column of pstats
+            callers = {}
+            callersdicts[id(entry.code)] = callers
+            self.stats[func] = cc, nc, tt, ct, callers
+        # subcall information
+        for entry in entries:
+            if entry.calls:
+                func = label(entry.code)
+                for subentry in entry.calls:
+                    try:
+                        callers = callersdicts[id(subentry.code)]
+                    except KeyError:
+                        continue
+                    nc = subentry.callcount
+                    cc = nc - subentry.reccallcount
+                    tt = subentry.inlinetime
+                    ct = subentry.totaltime
+                    if func in callers:
+                        prev = callers[func]
+                        nc += prev[0]
+                        cc += prev[1]
+                        tt += prev[2]
+                        ct += prev[3]
+                    callers[func] = nc, cc, tt, ct
+
+    # The following two methods can be called by clients to use
+    # a profiler to profile a statement, given as a string.
+
+    def run(self, cmd):
+        import __main__
+        dict = __main__.__dict__
+        return self.runctx(cmd, dict, dict)
+
+    def runctx(self, cmd, globals, locals):
+        self.enable()
+        try:
+            exec(cmd, globals, locals)
+        finally:
+            self.disable()
+        return self
+
+    # This method is more useful to profile a single function call.
+    def runcall(self, func, /, *args, **kw):
+        self.enable()
+        try:
+            return func(*args, **kw)
+        finally:
+            self.disable()
+
+    def __enter__(self):
+        self.enable()
+        return self
+
+    def __exit__(self, *exc_info):
+        self.disable()
+
+# ____________________________________________________________
+
+def label(code):
+    if isinstance(code, str):
+        return ('~', 0, code)    # built-in functions ('~' sorts at the end)
+    else:
+        return (code.co_filename, code.co_firstlineno, code.co_name)
+
+# ____________________________________________________________
+
+def main():
+    import os
+    import sys
+    import runpy
+    import pstats
+    from optparse import OptionParser
+    usage = "cProfile.py [-o output_file_path] [-s sort] [-m module | scriptfile] [arg] ..."
+    parser = OptionParser(usage=usage)
+    parser.allow_interspersed_args = False
+    parser.add_option('-o', '--outfile', dest="outfile",
+        help="Save stats to <outfile>", default=None)
+    parser.add_option('-s', '--sort', dest="sort",
+        help="Sort order when printing to stdout, based on pstats.Stats class",
+        default=-1,
+        choices=sorted(pstats.Stats.sort_arg_dict_default))
+    parser.add_option('-m', dest="module", action="store_true",
+        help="Profile a library module", default=False)
+
+    if not sys.argv[1:]:
+        parser.print_usage()
+        sys.exit(2)
+
+    (options, args) = parser.parse_args()
+    sys.argv[:] = args
+
+    # The script that we're profiling may chdir, so capture the absolute path
+    # to the output file at startup.
+    if options.outfile is not None:
+        options.outfile = os.path.abspath(options.outfile)
+
+    if len(args) > 0:
+        if options.module:
+            code = "run_module(modname, run_name='__main__')"
+            globs = {
+                'run_module': runpy.run_module,
+                'modname': args[0]
+            }
+        else:
+            progname = args[0]
+            sys.path.insert(0, os.path.dirname(progname))
+            with io.open_code(progname) as fp:
+                code = compile(fp.read(), progname, 'exec')
+            globs = {
+                '__file__': progname,
+                '__name__': '__main__',
+                '__package__': None,
+                '__cached__': None,
+            }
+        try:
+            runctx(code, globs, None, options.outfile, options.sort)
+        except BrokenPipeError as exc:
+            # Prevent "Exception ignored" during interpreter shutdown.
+            sys.stdout = None
+            sys.exit(exc.errno)
+    else:
+        parser.print_usage()
+    return parser
+
+# When invoked as main program, invoke the profiler on a script
+if __name__ == '__main__':
+    main()

evalkit_tf446/lib/python3.10/cgitb.py

@@ -0,0 +1,321 @@
+"""More comprehensive traceback formatting for Python scripts.
+
+To enable this module, do:
+
+    import cgitb; cgitb.enable()
+
+at the top of your script.  The optional arguments to enable() are:
+
+    display     - if true, tracebacks are displayed in the web browser
+    logdir      - if set, tracebacks are written to files in this directory
+    context     - number of lines of source code to show for each stack frame
+    format      - 'text' or 'html' controls the output format
+
+By default, tracebacks are displayed but not saved, the context is 5 lines
+and the output format is 'html' (for backwards compatibility with the
+original use of this module)
+
+Alternatively, if you have caught an exception and want cgitb to display it
+for you, call cgitb.handler().  The optional argument to handler() is a
+3-item tuple (etype, evalue, etb) just like the value of sys.exc_info().
+The default handler displays output as HTML.
+
+"""
+import inspect
+import keyword
+import linecache
+import os
+import pydoc
+import sys
+import tempfile
+import time
+import tokenize
+import traceback
+
+def reset():
+    """Return a string that resets the CGI and browser to a known state."""
+    return '''<!--: spam
+Content-Type: text/html
+
+<body bgcolor="#f0f0f8"><font color="#f0f0f8" size="-5"> -->
+<body bgcolor="#f0f0f8"><font color="#f0f0f8" size="-5"> --> -->
+</font> </font> </font> </script> </object> </blockquote> </pre>
+</table> </table> </table> </table> </table> </font> </font> </font>'''
+
+__UNDEF__ = []                          # a special sentinel object
+def small(text):
+    if text:
+        return '<small>' + text + '</small>'
+    else:
+        return ''
+
+def strong(text):
+    if text:
+        return '<strong>' + text + '</strong>'
+    else:
+        return ''
+
+def grey(text):
+    if text:
+        return '<font color="#909090">' + text + '</font>'
+    else:
+        return ''
+
+def lookup(name, frame, locals):
+    """Find the value for a given name in the given environment."""
+    if name in locals:
+        return 'local', locals[name]
+    if name in frame.f_globals:
+        return 'global', frame.f_globals[name]
+    if '__builtins__' in frame.f_globals:
+        builtins = frame.f_globals['__builtins__']
+        if type(builtins) is type({}):
+            if name in builtins:
+                return 'builtin', builtins[name]
+        else:
+            if hasattr(builtins, name):
+                return 'builtin', getattr(builtins, name)
+    return None, __UNDEF__
+
+def scanvars(reader, frame, locals):
+    """Scan one logical line of Python and look up values of variables used."""
+    vars, lasttoken, parent, prefix, value = [], None, None, '', __UNDEF__
+    for ttype, token, start, end, line in tokenize.generate_tokens(reader):
+        if ttype == tokenize.NEWLINE: break
+        if ttype == tokenize.NAME and token not in keyword.kwlist:
+            if lasttoken == '.':
+                if parent is not __UNDEF__:
+                    value = getattr(parent, token, __UNDEF__)
+                    vars.append((prefix + token, prefix, value))
+            else:
+                where, value = lookup(token, frame, locals)
+                vars.append((token, where, value))
+        elif token == '.':
+            prefix += lasttoken + '.'
+            parent = value
+        else:
+            parent, prefix = None, ''
+        lasttoken = token
+    return vars
+
+def html(einfo, context=5):
+    """Return a nice HTML document describing a given traceback."""
+    etype, evalue, etb = einfo
+    if isinstance(etype, type):
+        etype = etype.__name__
+    pyver = 'Python ' + sys.version.split()[0] + ': ' + sys.executable
+    date = time.ctime(time.time())
+    head = '<body bgcolor="#f0f0f8">' + pydoc.html.heading(
+        '<big><big>%s</big></big>' %
+        strong(pydoc.html.escape(str(etype))),
+        '#ffffff', '#6622aa', pyver + '<br>' + date) + '''
+<p>A problem occurred in a Python script.  Here is the sequence of
+function calls leading up to the error, in the order they occurred.</p>'''
+
+    indent = '<tt>' + small('&nbsp;' * 5) + '&nbsp;</tt>'
+    frames = []
+    records = inspect.getinnerframes(etb, context)
+    for frame, file, lnum, func, lines, index in records:
+        if file:
+            file = os.path.abspath(file)
+            link = '<a href="file://%s">%s</a>' % (file, pydoc.html.escape(file))
+        else:
+            file = link = '?'
+        args, varargs, varkw, locals = inspect.getargvalues(frame)
+        call = ''
+        if func != '?':
+            call = 'in ' + strong(pydoc.html.escape(func))
+            if func != "<module>":
+                call += inspect.formatargvalues(args, varargs, varkw, locals,
+                    formatvalue=lambda value: '=' + pydoc.html.repr(value))
+
+        highlight = {}
+        def reader(lnum=[lnum]):
+            highlight[lnum[0]] = 1
+            try: return linecache.getline(file, lnum[0])
+            finally: lnum[0] += 1
+        vars = scanvars(reader, frame, locals)
+
+        rows = ['<tr><td bgcolor="#d8bbff">%s%s %s</td></tr>' %
+                ('<big>&nbsp;</big>', link, call)]
+        if index is not None:
+            i = lnum - index
+            for line in lines:
+                num = small('&nbsp;' * (5-len(str(i))) + str(i)) + '&nbsp;'
+                if i in highlight:
+                    line = '<tt>=&gt;%s%s</tt>' % (num, pydoc.html.preformat(line))
+                    rows.append('<tr><td bgcolor="#ffccee">%s</td></tr>' % line)
+                else:
+                    line = '<tt>&nbsp;&nbsp;%s%s</tt>' % (num, pydoc.html.preformat(line))
+                    rows.append('<tr><td>%s</td></tr>' % grey(line))
+                i += 1
+
+        done, dump = {}, []
+        for name, where, value in vars:
+            if name in done: continue
+            done[name] = 1
+            if value is not __UNDEF__:
+                if where in ('global', 'builtin'):
+                    name = ('<em>%s</em> ' % where) + strong(name)
+                elif where == 'local':
+                    name = strong(name)
+                else:
+                    name = where + strong(name.split('.')[-1])
+                dump.append('%s&nbsp;= %s' % (name, pydoc.html.repr(value)))
+            else:
+                dump.append(name + ' <em>undefined</em>')
+
+        rows.append('<tr><td>%s</td></tr>' % small(grey(', '.join(dump))))
+        frames.append('''
+<table width="100%%" cellspacing=0 cellpadding=0 border=0>
+%s</table>''' % '\n'.join(rows))
+
+    exception = ['<p>%s: %s' % (strong(pydoc.html.escape(str(etype))),
+                                pydoc.html.escape(str(evalue)))]
+    for name in dir(evalue):
+        if name[:1] == '_': continue
+        value = pydoc.html.repr(getattr(evalue, name))
+        exception.append('\n<br>%s%s&nbsp;=\n%s' % (indent, name, value))
+
+    return head + ''.join(frames) + ''.join(exception) + '''
+
+
+<!-- The above is a description of an error in a Python program, formatted
+     for a web browser because the 'cgitb' module was enabled.  In case you
+     are not reading this in a web browser, here is the original traceback:
+
+%s
+-->
+''' % pydoc.html.escape(
+          ''.join(traceback.format_exception(etype, evalue, etb)))
+
+def text(einfo, context=5):
+    """Return a plain text document describing a given traceback."""
+    etype, evalue, etb = einfo
+    if isinstance(etype, type):
+        etype = etype.__name__
+    pyver = 'Python ' + sys.version.split()[0] + ': ' + sys.executable
+    date = time.ctime(time.time())
+    head = "%s\n%s\n%s\n" % (str(etype), pyver, date) + '''
+A problem occurred in a Python script.  Here is the sequence of
+function calls leading up to the error, in the order they occurred.
+'''
+
+    frames = []
+    records = inspect.getinnerframes(etb, context)
+    for frame, file, lnum, func, lines, index in records:
+        file = file and os.path.abspath(file) or '?'
+        args, varargs, varkw, locals = inspect.getargvalues(frame)
+        call = ''
+        if func != '?':
+            call = 'in ' + func
+            if func != "<module>":
+                call += inspect.formatargvalues(args, varargs, varkw, locals,
+                    formatvalue=lambda value: '=' + pydoc.text.repr(value))
+
+        highlight = {}
+        def reader(lnum=[lnum]):
+            highlight[lnum[0]] = 1
+            try: return linecache.getline(file, lnum[0])
+            finally: lnum[0] += 1
+        vars = scanvars(reader, frame, locals)
+
+        rows = [' %s %s' % (file, call)]
+        if index is not None:
+            i = lnum - index
+            for line in lines:
+                num = '%5d ' % i
+                rows.append(num+line.rstrip())
+                i += 1
+
+        done, dump = {}, []
+        for name, where, value in vars:
+            if name in done: continue
+            done[name] = 1
+            if value is not __UNDEF__:
+                if where == 'global': name = 'global ' + name
+                elif where != 'local': name = where + name.split('.')[-1]
+                dump.append('%s = %s' % (name, pydoc.text.repr(value)))
+            else:
+                dump.append(name + ' undefined')
+
+        rows.append('\n'.join(dump))
+        frames.append('\n%s\n' % '\n'.join(rows))
+
+    exception = ['%s: %s' % (str(etype), str(evalue))]
+    for name in dir(evalue):
+        value = pydoc.text.repr(getattr(evalue, name))
+        exception.append('\n%s%s = %s' % (" "*4, name, value))
+
+    return head + ''.join(frames) + ''.join(exception) + '''
+
+The above is a description of an error in a Python program.  Here is
+the original traceback:
+
+%s
+''' % ''.join(traceback.format_exception(etype, evalue, etb))
+
+class Hook:
+    """A hook to replace sys.excepthook that shows tracebacks in HTML."""
+
+    def __init__(self, display=1, logdir=None, context=5, file=None,
+                 format="html"):
+        self.display = display          # send tracebacks to browser if true
+        self.logdir = logdir            # log tracebacks to files if not None
+        self.context = context          # number of source code lines per frame
+        self.file = file or sys.stdout  # place to send the output
+        self.format = format
+
+    def __call__(self, etype, evalue, etb):
+        self.handle((etype, evalue, etb))
+
+    def handle(self, info=None):
+        info = info or sys.exc_info()
+        if self.format == "html":
+            self.file.write(reset())
+
+        formatter = (self.format=="html") and html or text
+        plain = False
+        try:
+            doc = formatter(info, self.context)
+        except:                         # just in case something goes wrong
+            doc = ''.join(traceback.format_exception(*info))
+            plain = True
+
+        if self.display:
+            if plain:
+                doc = pydoc.html.escape(doc)
+                self.file.write('<pre>' + doc + '</pre>\n')
+            else:
+                self.file.write(doc + '\n')
+        else:
+            self.file.write('<p>A problem occurred in a Python script.\n')
+
+        if self.logdir is not None:
+            suffix = ['.txt', '.html'][self.format=="html"]
+            (fd, path) = tempfile.mkstemp(suffix=suffix, dir=self.logdir)
+
+            try:
+                with os.fdopen(fd, 'w') as file:
+                    file.write(doc)
+                msg = '%s contains the description of this error.' % path
+            except:
+                msg = 'Tried to save traceback to %s, but failed.' % path
+
+            if self.format == 'html':
+                self.file.write('<p>%s</p>\n' % msg)
+            else:
+                self.file.write(msg + '\n')
+        try:
+            self.file.flush()
+        except: pass
+
+handler = Hook().handle
+def enable(display=1, logdir=None, context=5, format="html"):
+    """Install an exception handler that formats tracebacks as HTML.
+
+    The optional argument 'display' can be set to 0 to suppress sending the
+    traceback to the browser, and 'logdir' can be set to a directory to cause
+    tracebacks to be written to files there."""
+    sys.excepthook = Hook(display=display, logdir=logdir,
+                          context=context, format=format)

evalkit_tf446/lib/python3.10/chunk.py

@@ -0,0 +1,169 @@
+"""Simple class to read IFF chunks.
+
+An IFF chunk (used in formats such as AIFF, TIFF, RMFF (RealMedia File
+Format)) has the following structure:
+
++----------------+
+| ID (4 bytes)   |
++----------------+
+| size (4 bytes) |
++----------------+
+| data           |
+| ...            |
++----------------+
+
+The ID is a 4-byte string which identifies the type of chunk.
+
+The size field (a 32-bit value, encoded using big-endian byte order)
+gives the size of the whole chunk, including the 8-byte header.
+
+Usually an IFF-type file consists of one or more chunks.  The proposed
+usage of the Chunk class defined here is to instantiate an instance at
+the start of each chunk and read from the instance until it reaches
+the end, after which a new instance can be instantiated.  At the end
+of the file, creating a new instance will fail with an EOFError
+exception.
+
+Usage:
+while True:
+    try:
+        chunk = Chunk(file)
+    except EOFError:
+        break
+    chunktype = chunk.getname()
+    while True:
+        data = chunk.read(nbytes)
+        if not data:
+            pass
+        # do something with data
+
+The interface is file-like.  The implemented methods are:
+read, close, seek, tell, isatty.
+Extra methods are: skip() (called by close, skips to the end of the chunk),
+getname() (returns the name (ID) of the chunk)
+
+The __init__ method has one required argument, a file-like object
+(including a chunk instance), and one optional argument, a flag which
+specifies whether or not chunks are aligned on 2-byte boundaries.  The
+default is 1, i.e. aligned.
+"""
+
+class Chunk:
+    def __init__(self, file, align=True, bigendian=True, inclheader=False):
+        import struct
+        self.closed = False
+        self.align = align      # whether to align to word (2-byte) boundaries
+        if bigendian:
+            strflag = '>'
+        else:
+            strflag = '<'
+        self.file = file
+        self.chunkname = file.read(4)
+        if len(self.chunkname) < 4:
+            raise EOFError
+        try:
+            self.chunksize = struct.unpack_from(strflag+'L', file.read(4))[0]
+        except struct.error:
+            raise EOFError from None
+        if inclheader:
+            self.chunksize = self.chunksize - 8 # subtract header
+        self.size_read = 0
+        try:
+            self.offset = self.file.tell()
+        except (AttributeError, OSError):
+            self.seekable = False
+        else:
+            self.seekable = True
+
+    def getname(self):
+        """Return the name (ID) of the current chunk."""
+        return self.chunkname
+
+    def getsize(self):
+        """Return the size of the current chunk."""
+        return self.chunksize
+
+    def close(self):
+        if not self.closed:
+            try:
+                self.skip()
+            finally:
+                self.closed = True
+
+    def isatty(self):
+        if self.closed:
+            raise ValueError("I/O operation on closed file")
+        return False
+
+    def seek(self, pos, whence=0):
+        """Seek to specified position into the chunk.
+        Default position is 0 (start of chunk).
+        If the file is not seekable, this will result in an error.
+        """
+
+        if self.closed:
+            raise ValueError("I/O operation on closed file")
+        if not self.seekable:
+            raise OSError("cannot seek")
+        if whence == 1:
+            pos = pos + self.size_read
+        elif whence == 2:
+            pos = pos + self.chunksize
+        if pos < 0 or pos > self.chunksize:
+            raise RuntimeError
+        self.file.seek(self.offset + pos, 0)
+        self.size_read = pos
+
+    def tell(self):
+        if self.closed:
+            raise ValueError("I/O operation on closed file")
+        return self.size_read
+
+    def read(self, size=-1):
+        """Read at most size bytes from the chunk.
+        If size is omitted or negative, read until the end
+        of the chunk.
+        """
+
+        if self.closed:
+            raise ValueError("I/O operation on closed file")
+        if self.size_read >= self.chunksize:
+            return b''
+        if size < 0:
+            size = self.chunksize - self.size_read
+        if size > self.chunksize - self.size_read:
+            size = self.chunksize - self.size_read
+        data = self.file.read(size)
+        self.size_read = self.size_read + len(data)
+        if self.size_read == self.chunksize and \
+           self.align and \
+           (self.chunksize & 1):
+            dummy = self.file.read(1)
+            self.size_read = self.size_read + len(dummy)
+        return data
+
+    def skip(self):
+        """Skip the rest of the chunk.
+        If you are not interested in the contents of the chunk,
+        this method should be called so that the file points to
+        the start of the next chunk.
+        """
+
+        if self.closed:
+            raise ValueError("I/O operation on closed file")
+        if self.seekable:
+            try:
+                n = self.chunksize - self.size_read
+                # maybe fix alignment
+                if self.align and (self.chunksize & 1):
+                    n = n + 1
+                self.file.seek(n, 1)
+                self.size_read = self.size_read + n
+                return
+            except OSError:
+                pass
+        while self.size_read < self.chunksize:
+            n = min(8192, self.chunksize - self.size_read)
+            dummy = self.read(n)
+            if not dummy:
+                raise EOFError

evalkit_tf446/lib/python3.10/cmd.py

@@ -0,0 +1,401 @@
+"""A generic class to build line-oriented command interpreters.
+
+Interpreters constructed with this class obey the following conventions:
+
+1. End of file on input is processed as the command 'EOF'.
+2. A command is parsed out of each line by collecting the prefix composed
+   of characters in the identchars member.
+3. A command `foo' is dispatched to a method 'do_foo()'; the do_ method
+   is passed a single argument consisting of the remainder of the line.
+4. Typing an empty line repeats the last command.  (Actually, it calls the
+   method `emptyline', which may be overridden in a subclass.)
+5. There is a predefined `help' method.  Given an argument `topic', it
+   calls the command `help_topic'.  With no arguments, it lists all topics
+   with defined help_ functions, broken into up to three topics; documented
+   commands, miscellaneous help topics, and undocumented commands.
+6. The command '?' is a synonym for `help'.  The command '!' is a synonym
+   for `shell', if a do_shell method exists.
+7. If completion is enabled, completing commands will be done automatically,
+   and completing of commands args is done by calling complete_foo() with
+   arguments text, line, begidx, endidx.  text is string we are matching
+   against, all returned matches must begin with it.  line is the current
+   input line (lstripped), begidx and endidx are the beginning and end
+   indexes of the text being matched, which could be used to provide
+   different completion depending upon which position the argument is in.
+
+The `default' method may be overridden to intercept commands for which there
+is no do_ method.
+
+The `completedefault' method may be overridden to intercept completions for
+commands that have no complete_ method.
+
+The data member `self.ruler' sets the character used to draw separator lines
+in the help messages.  If empty, no ruler line is drawn.  It defaults to "=".
+
+If the value of `self.intro' is nonempty when the cmdloop method is called,
+it is printed out on interpreter startup.  This value may be overridden
+via an optional argument to the cmdloop() method.
+
+The data members `self.doc_header', `self.misc_header', and
+`self.undoc_header' set the headers used for the help function's
+listings of documented functions, miscellaneous topics, and undocumented
+functions respectively.
+"""
+
+import string, sys
+
+__all__ = ["Cmd"]
+
+PROMPT = '(Cmd) '
+IDENTCHARS = string.ascii_letters + string.digits + '_'
+
+class Cmd:
+    """A simple framework for writing line-oriented command interpreters.
+
+    These are often useful for test harnesses, administrative tools, and
+    prototypes that will later be wrapped in a more sophisticated interface.
+
+    A Cmd instance or subclass instance is a line-oriented interpreter
+    framework.  There is no good reason to instantiate Cmd itself; rather,
+    it's useful as a superclass of an interpreter class you define yourself
+    in order to inherit Cmd's methods and encapsulate action methods.
+
+    """
+    prompt = PROMPT
+    identchars = IDENTCHARS
+    ruler = '='
+    lastcmd = ''
+    intro = None
+    doc_leader = ""
+    doc_header = "Documented commands (type help <topic>):"
+    misc_header = "Miscellaneous help topics:"
+    undoc_header = "Undocumented commands:"
+    nohelp = "*** No help on %s"
+    use_rawinput = 1
+
+    def __init__(self, completekey='tab', stdin=None, stdout=None):
+        """Instantiate a line-oriented interpreter framework.
+
+        The optional argument 'completekey' is the readline name of a
+        completion key; it defaults to the Tab key. If completekey is
+        not None and the readline module is available, command completion
+        is done automatically. The optional arguments stdin and stdout
+        specify alternate input and output file objects; if not specified,
+        sys.stdin and sys.stdout are used.
+
+        """
+        if stdin is not None:
+            self.stdin = stdin
+        else:
+            self.stdin = sys.stdin
+        if stdout is not None:
+            self.stdout = stdout
+        else:
+            self.stdout = sys.stdout
+        self.cmdqueue = []
+        self.completekey = completekey
+
+    def cmdloop(self, intro=None):
+        """Repeatedly issue a prompt, accept input, parse an initial prefix
+        off the received input, and dispatch to action methods, passing them
+        the remainder of the line as argument.
+
+        """
+
+        self.preloop()
+        if self.use_rawinput and self.completekey:
+            try:
+                import readline
+                self.old_completer = readline.get_completer()
+                readline.set_completer(self.complete)
+                readline.parse_and_bind(self.completekey+": complete")
+            except ImportError:
+                pass
+        try:
+            if intro is not None:
+                self.intro = intro
+            if self.intro:
+                self.stdout.write(str(self.intro)+"\n")
+            stop = None
+            while not stop:
+                if self.cmdqueue:
+                    line = self.cmdqueue.pop(0)
+                else:
+                    if self.use_rawinput:
+                        try:
+                            line = input(self.prompt)
+                        except EOFError:
+                            line = 'EOF'
+                    else:
+                        self.stdout.write(self.prompt)
+                        self.stdout.flush()
+                        line = self.stdin.readline()
+                        if not len(line):
+                            line = 'EOF'
+                        else:
+                            line = line.rstrip('\r\n')
+                line = self.precmd(line)
+                stop = self.onecmd(line)
+                stop = self.postcmd(stop, line)
+            self.postloop()
+        finally:
+            if self.use_rawinput and self.completekey:
+                try:
+                    import readline
+                    readline.set_completer(self.old_completer)
+                except ImportError:
+                    pass
+
+
+    def precmd(self, line):
+        """Hook method executed just before the command line is
+        interpreted, but after the input prompt is generated and issued.
+
+        """
+        return line
+
+    def postcmd(self, stop, line):
+        """Hook method executed just after a command dispatch is finished."""
+        return stop
+
+    def preloop(self):
+        """Hook method executed once when the cmdloop() method is called."""
+        pass
+
+    def postloop(self):
+        """Hook method executed once when the cmdloop() method is about to
+        return.
+
+        """
+        pass
+
+    def parseline(self, line):
+        """Parse the line into a command name and a string containing
+        the arguments.  Returns a tuple containing (command, args, line).
+        'command' and 'args' may be None if the line couldn't be parsed.
+        """
+        line = line.strip()
+        if not line:
+            return None, None, line
+        elif line[0] == '?':
+            line = 'help ' + line[1:]
+        elif line[0] == '!':
+            if hasattr(self, 'do_shell'):
+                line = 'shell ' + line[1:]
+            else:
+                return None, None, line
+        i, n = 0, len(line)
+        while i < n and line[i] in self.identchars: i = i+1
+        cmd, arg = line[:i], line[i:].strip()
+        return cmd, arg, line
+
+    def onecmd(self, line):
+        """Interpret the argument as though it had been typed in response
+        to the prompt.
+
+        This may be overridden, but should not normally need to be;
+        see the precmd() and postcmd() methods for useful execution hooks.
+        The return value is a flag indicating whether interpretation of
+        commands by the interpreter should stop.
+
+        """
+        cmd, arg, line = self.parseline(line)
+        if not line:
+            return self.emptyline()
+        if cmd is None:
+            return self.default(line)
+        self.lastcmd = line
+        if line == 'EOF' :
+            self.lastcmd = ''
+        if cmd == '':
+            return self.default(line)
+        else:
+            try:
+                func = getattr(self, 'do_' + cmd)
+            except AttributeError:
+                return self.default(line)
+            return func(arg)
+
+    def emptyline(self):
+        """Called when an empty line is entered in response to the prompt.
+
+        If this method is not overridden, it repeats the last nonempty
+        command entered.
+
+        """
+        if self.lastcmd:
+            return self.onecmd(self.lastcmd)
+
+    def default(self, line):
+        """Called on an input line when the command prefix is not recognized.
+
+        If this method is not overridden, it prints an error message and
+        returns.
+
+        """
+        self.stdout.write('*** Unknown syntax: %s\n'%line)
+
+    def completedefault(self, *ignored):
+        """Method called to complete an input line when no command-specific
+        complete_*() method is available.
+
+        By default, it returns an empty list.
+
+        """
+        return []
+
+    def completenames(self, text, *ignored):
+        dotext = 'do_'+text
+        return [a[3:] for a in self.get_names() if a.startswith(dotext)]
+
+    def complete(self, text, state):
+        """Return the next possible completion for 'text'.
+
+        If a command has not been entered, then complete against command list.
+        Otherwise try to call complete_<command> to get list of completions.
+        """
+        if state == 0:
+            import readline
+            origline = readline.get_line_buffer()
+            line = origline.lstrip()
+            stripped = len(origline) - len(line)
+            begidx = readline.get_begidx() - stripped
+            endidx = readline.get_endidx() - stripped
+            if begidx>0:
+                cmd, args, foo = self.parseline(line)
+                if cmd == '':
+                    compfunc = self.completedefault
+                else:
+                    try:
+                        compfunc = getattr(self, 'complete_' + cmd)
+                    except AttributeError:
+                        compfunc = self.completedefault
+            else:
+                compfunc = self.completenames
+            self.completion_matches = compfunc(text, line, begidx, endidx)
+        try:
+            return self.completion_matches[state]
+        except IndexError:
+            return None
+
+    def get_names(self):
+        # This method used to pull in base class attributes
+        # at a time dir() didn't do it yet.
+        return dir(self.__class__)
+
+    def complete_help(self, *args):
+        commands = set(self.completenames(*args))
+        topics = set(a[5:] for a in self.get_names()
+                     if a.startswith('help_' + args[0]))
+        return list(commands | topics)
+
+    def do_help(self, arg):
+        'List available commands with "help" or detailed help with "help cmd".'
+        if arg:
+            # XXX check arg syntax
+            try:
+                func = getattr(self, 'help_' + arg)
+            except AttributeError:
+                try:
+                    doc=getattr(self, 'do_' + arg).__doc__
+                    if doc:
+                        self.stdout.write("%s\n"%str(doc))
+                        return
+                except AttributeError:
+                    pass
+                self.stdout.write("%s\n"%str(self.nohelp % (arg,)))
+                return
+            func()
+        else:
+            names = self.get_names()
+            cmds_doc = []
+            cmds_undoc = []
+            help = {}
+            for name in names:
+                if name[:5] == 'help_':
+                    help[name[5:]]=1
+            names.sort()
+            # There can be duplicates if routines overridden
+            prevname = ''
+            for name in names:
+                if name[:3] == 'do_':
+                    if name == prevname:
+                        continue
+                    prevname = name
+                    cmd=name[3:]
+                    if cmd in help:
+                        cmds_doc.append(cmd)
+                        del help[cmd]
+                    elif getattr(self, name).__doc__:
+                        cmds_doc.append(cmd)
+                    else:
+                        cmds_undoc.append(cmd)
+            self.stdout.write("%s\n"%str(self.doc_leader))
+            self.print_topics(self.doc_header,   cmds_doc,   15,80)
+            self.print_topics(self.misc_header,  list(help.keys()),15,80)
+            self.print_topics(self.undoc_header, cmds_undoc, 15,80)
+
+    def print_topics(self, header, cmds, cmdlen, maxcol):
+        if cmds:
+            self.stdout.write("%s\n"%str(header))
+            if self.ruler:
+                self.stdout.write("%s\n"%str(self.ruler * len(header)))
+            self.columnize(cmds, maxcol-1)
+            self.stdout.write("\n")
+
+    def columnize(self, list, displaywidth=80):
+        """Display a list of strings as a compact set of columns.
+
+        Each column is only as wide as necessary.
+        Columns are separated by two spaces (one was not legible enough).
+        """
+        if not list:
+            self.stdout.write("<empty>\n")
+            return
+
+        nonstrings = [i for i in range(len(list))
+                        if not isinstance(list[i], str)]
+        if nonstrings:
+            raise TypeError("list[i] not a string for i in %s"
+                            % ", ".join(map(str, nonstrings)))
+        size = len(list)
+        if size == 1:
+            self.stdout.write('%s\n'%str(list[0]))
+            return
+        # Try every row count from 1 upwards
+        for nrows in range(1, len(list)):
+            ncols = (size+nrows-1) // nrows
+            colwidths = []
+            totwidth = -2
+            for col in range(ncols):
+                colwidth = 0
+                for row in range(nrows):
+                    i = row + nrows*col
+                    if i >= size:
+                        break
+                    x = list[i]
+                    colwidth = max(colwidth, len(x))
+                colwidths.append(colwidth)
+                totwidth += colwidth + 2
+                if totwidth > displaywidth:
+                    break
+            if totwidth <= displaywidth:
+                break
+        else:
+            nrows = len(list)
+            ncols = 1
+            colwidths = [0]
+        for row in range(nrows):
+            texts = []
+            for col in range(ncols):
+                i = row + nrows*col
+                if i >= size:
+                    x = ""
+                else:
+                    x = list[i]
+                texts.append(x)
+            while texts and not texts[-1]:
+                del texts[-1]
+            for col in range(len(texts)):
+                texts[col] = texts[col].ljust(colwidths[col])
+            self.stdout.write("%s\n"%str("  ".join(texts)))

evalkit_tf446/lib/python3.10/code.py

@@ -0,0 +1,315 @@
+"""Utilities needed to emulate Python's interactive interpreter.
+
+"""
+
+# Inspired by similar code by Jeff Epler and Fredrik Lundh.
+
+
+import sys
+import traceback
+from codeop import CommandCompiler, compile_command
+
+__all__ = ["InteractiveInterpreter", "InteractiveConsole", "interact",
+           "compile_command"]
+
+class InteractiveInterpreter:
+    """Base class for InteractiveConsole.
+
+    This class deals with parsing and interpreter state (the user's
+    namespace); it doesn't deal with input buffering or prompting or
+    input file naming (the filename is always passed in explicitly).
+
+    """
+
+    def __init__(self, locals=None):
+        """Constructor.
+
+        The optional 'locals' argument specifies the dictionary in
+        which code will be executed; it defaults to a newly created
+        dictionary with key "__name__" set to "__console__" and key
+        "__doc__" set to None.
+
+        """
+        if locals is None:
+            locals = {"__name__": "__console__", "__doc__": None}
+        self.locals = locals
+        self.compile = CommandCompiler()
+
+    def runsource(self, source, filename="<input>", symbol="single"):
+        """Compile and run some source in the interpreter.
+
+        Arguments are as for compile_command().
+
+        One of several things can happen:
+
+        1) The input is incorrect; compile_command() raised an
+        exception (SyntaxError or OverflowError).  A syntax traceback
+        will be printed by calling the showsyntaxerror() method.
+
+        2) The input is incomplete, and more input is required;
+        compile_command() returned None.  Nothing happens.
+
+        3) The input is complete; compile_command() returned a code
+        object.  The code is executed by calling self.runcode() (which
+        also handles run-time exceptions, except for SystemExit).
+
+        The return value is True in case 2, False in the other cases (unless
+        an exception is raised).  The return value can be used to
+        decide whether to use sys.ps1 or sys.ps2 to prompt the next
+        line.
+
+        """
+        try:
+            code = self.compile(source, filename, symbol)
+        except (OverflowError, SyntaxError, ValueError):
+            # Case 1
+            self.showsyntaxerror(filename)
+            return False
+
+        if code is None:
+            # Case 2
+            return True
+
+        # Case 3
+        self.runcode(code)
+        return False
+
+    def runcode(self, code):
+        """Execute a code object.
+
+        When an exception occurs, self.showtraceback() is called to
+        display a traceback.  All exceptions are caught except
+        SystemExit, which is reraised.
+
+        A note about KeyboardInterrupt: this exception may occur
+        elsewhere in this code, and may not always be caught.  The
+        caller should be prepared to deal with it.
+
+        """
+        try:
+            exec(code, self.locals)
+        except SystemExit:
+            raise
+        except:
+            self.showtraceback()
+
+    def showsyntaxerror(self, filename=None):
+        """Display the syntax error that just occurred.
+
+        This doesn't display a stack trace because there isn't one.
+
+        If a filename is given, it is stuffed in the exception instead
+        of what was there before (because Python's parser always uses
+        "<string>" when reading from a string).
+
+        The output is written by self.write(), below.
+
+        """
+        type, value, tb = sys.exc_info()
+        sys.last_type = type
+        sys.last_value = value
+        sys.last_traceback = tb
+        if filename and type is SyntaxError:
+            # Work hard to stuff the correct filename in the exception
+            try:
+                msg, (dummy_filename, lineno, offset, line) = value.args
+            except ValueError:
+                # Not the format we expect; leave it alone
+                pass
+            else:
+                # Stuff in the right filename
+                value = SyntaxError(msg, (filename, lineno, offset, line))
+                sys.last_value = value
+        if sys.excepthook is sys.__excepthook__:
+            lines = traceback.format_exception_only(type, value)
+            self.write(''.join(lines))
+        else:
+            # If someone has set sys.excepthook, we let that take precedence
+            # over self.write
+            sys.excepthook(type, value, tb)
+
+    def showtraceback(self):
+        """Display the exception that just occurred.
+
+        We remove the first stack item because it is our own code.
+
+        The output is written by self.write(), below.
+
+        """
+        sys.last_type, sys.last_value, last_tb = ei = sys.exc_info()
+        sys.last_traceback = last_tb
+        try:
+            lines = traceback.format_exception(ei[0], ei[1], last_tb.tb_next)
+            if sys.excepthook is sys.__excepthook__:
+                self.write(''.join(lines))
+            else:
+                # If someone has set sys.excepthook, we let that take precedence
+                # over self.write
+                sys.excepthook(ei[0], ei[1], last_tb)
+        finally:
+            last_tb = ei = None
+
+    def write(self, data):
+        """Write a string.
+
+        The base implementation writes to sys.stderr; a subclass may
+        replace this with a different implementation.
+
+        """
+        sys.stderr.write(data)
+
+
+class InteractiveConsole(InteractiveInterpreter):
+    """Closely emulate the behavior of the interactive Python interpreter.
+
+    This class builds on InteractiveInterpreter and adds prompting
+    using the familiar sys.ps1 and sys.ps2, and input buffering.
+
+    """
+
+    def __init__(self, locals=None, filename="<console>"):
+        """Constructor.
+
+        The optional locals argument will be passed to the
+        InteractiveInterpreter base class.
+
+        The optional filename argument should specify the (file)name
+        of the input stream; it will show up in tracebacks.
+
+        """
+        InteractiveInterpreter.__init__(self, locals)
+        self.filename = filename
+        self.resetbuffer()
+
+    def resetbuffer(self):
+        """Reset the input buffer."""
+        self.buffer = []
+
+    def interact(self, banner=None, exitmsg=None):
+        """Closely emulate the interactive Python console.
+
+        The optional banner argument specifies the banner to print
+        before the first interaction; by default it prints a banner
+        similar to the one printed by the real Python interpreter,
+        followed by the current class name in parentheses (so as not
+        to confuse this with the real interpreter -- since it's so
+        close!).
+
+        The optional exitmsg argument specifies the exit message
+        printed when exiting. Pass the empty string to suppress
+        printing an exit message. If exitmsg is not given or None,
+        a default message is printed.
+
+        """
+        try:
+            sys.ps1
+        except AttributeError:
+            sys.ps1 = ">>> "
+        try:
+            sys.ps2
+        except AttributeError:
+            sys.ps2 = "... "
+        cprt = 'Type "help", "copyright", "credits" or "license" for more information.'
+        if banner is None:
+            self.write("Python %s on %s\n%s\n(%s)\n" %
+                       (sys.version, sys.platform, cprt,
+                        self.__class__.__name__))
+        elif banner:
+            self.write("%s\n" % str(banner))
+        more = 0
+        while 1:
+            try:
+                if more:
+                    prompt = sys.ps2
+                else:
+                    prompt = sys.ps1
+                try:
+                    line = self.raw_input(prompt)
+                except EOFError:
+                    self.write("\n")
+                    break
+                else:
+                    more = self.push(line)
+            except KeyboardInterrupt:
+                self.write("\nKeyboardInterrupt\n")
+                self.resetbuffer()
+                more = 0
+        if exitmsg is None:
+            self.write('now exiting %s...\n' % self.__class__.__name__)
+        elif exitmsg != '':
+            self.write('%s\n' % exitmsg)
+
+    def push(self, line):
+        """Push a line to the interpreter.
+
+        The line should not have a trailing newline; it may have
+        internal newlines.  The line is appended to a buffer and the
+        interpreter's runsource() method is called with the
+        concatenated contents of the buffer as source.  If this
+        indicates that the command was executed or invalid, the buffer
+        is reset; otherwise, the command is incomplete, and the buffer
+        is left as it was after the line was appended.  The return
+        value is 1 if more input is required, 0 if the line was dealt
+        with in some way (this is the same as runsource()).
+
+        """
+        self.buffer.append(line)
+        source = "\n".join(self.buffer)
+        more = self.runsource(source, self.filename)
+        if not more:
+            self.resetbuffer()
+        return more
+
+    def raw_input(self, prompt=""):
+        """Write a prompt and read a line.
+
+        The returned line does not include the trailing newline.
+        When the user enters the EOF key sequence, EOFError is raised.
+
+        The base implementation uses the built-in function
+        input(); a subclass may replace this with a different
+        implementation.
+
+        """
+        return input(prompt)
+
+
+
+def interact(banner=None, readfunc=None, local=None, exitmsg=None):
+    """Closely emulate the interactive Python interpreter.
+
+    This is a backwards compatible interface to the InteractiveConsole
+    class.  When readfunc is not specified, it attempts to import the
+    readline module to enable GNU readline if it is available.
+
+    Arguments (all optional, all default to None):
+
+    banner -- passed to InteractiveConsole.interact()
+    readfunc -- if not None, replaces InteractiveConsole.raw_input()
+    local -- passed to InteractiveInterpreter.__init__()
+    exitmsg -- passed to InteractiveConsole.interact()
+
+    """
+    console = InteractiveConsole(local)
+    if readfunc is not None:
+        console.raw_input = readfunc
+    else:
+        try:
+            import readline
+        except ImportError:
+            pass
+    console.interact(banner, exitmsg)
+
+
+if __name__ == "__main__":
+    import argparse
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-q', action='store_true',
+                       help="don't print version and copyright messages")
+    args = parser.parse_args()
+    if args.q or sys.flags.quiet:
+        banner = ''
+    else:
+        banner = None
+    interact(banner)

evalkit_tf446/lib/python3.10/codecs.py

@@ -0,0 +1,1127 @@
+""" codecs -- Python Codec Registry, API and helpers.
+
+
+Written by Marc-Andre Lemburg (mal@lemburg.com).
+
+(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
+
+"""
+
+import builtins
+import sys
+
+### Registry and builtin stateless codec functions
+
+try:
+    from _codecs import *
+except ImportError as why:
+    raise SystemError('Failed to load the builtin codecs: %s' % why)
+
+__all__ = ["register", "lookup", "open", "EncodedFile", "BOM", "BOM_BE",
+           "BOM_LE", "BOM32_BE", "BOM32_LE", "BOM64_BE", "BOM64_LE",
+           "BOM_UTF8", "BOM_UTF16", "BOM_UTF16_LE", "BOM_UTF16_BE",
+           "BOM_UTF32", "BOM_UTF32_LE", "BOM_UTF32_BE",
+           "CodecInfo", "Codec", "IncrementalEncoder", "IncrementalDecoder",
+           "StreamReader", "StreamWriter",
+           "StreamReaderWriter", "StreamRecoder",
+           "getencoder", "getdecoder", "getincrementalencoder",
+           "getincrementaldecoder", "getreader", "getwriter",
+           "encode", "decode", "iterencode", "iterdecode",
+           "strict_errors", "ignore_errors", "replace_errors",
+           "xmlcharrefreplace_errors",
+           "backslashreplace_errors", "namereplace_errors",
+           "register_error", "lookup_error"]
+
+### Constants
+
+#
+# Byte Order Mark (BOM = ZERO WIDTH NO-BREAK SPACE = U+FEFF)
+# and its possible byte string values
+# for UTF8/UTF16/UTF32 output and little/big endian machines
+#
+
+# UTF-8
+BOM_UTF8 = b'\xef\xbb\xbf'
+
+# UTF-16, little endian
+BOM_LE = BOM_UTF16_LE = b'\xff\xfe'
+
+# UTF-16, big endian
+BOM_BE = BOM_UTF16_BE = b'\xfe\xff'
+
+# UTF-32, little endian
+BOM_UTF32_LE = b'\xff\xfe\x00\x00'
+
+# UTF-32, big endian
+BOM_UTF32_BE = b'\x00\x00\xfe\xff'
+
+if sys.byteorder == 'little':
+
+    # UTF-16, native endianness
+    BOM = BOM_UTF16 = BOM_UTF16_LE
+
+    # UTF-32, native endianness
+    BOM_UTF32 = BOM_UTF32_LE
+
+else:
+
+    # UTF-16, native endianness
+    BOM = BOM_UTF16 = BOM_UTF16_BE
+
+    # UTF-32, native endianness
+    BOM_UTF32 = BOM_UTF32_BE
+
+# Old broken names (don't use in new code)
+BOM32_LE = BOM_UTF16_LE
+BOM32_BE = BOM_UTF16_BE
+BOM64_LE = BOM_UTF32_LE
+BOM64_BE = BOM_UTF32_BE
+
+
+### Codec base classes (defining the API)
+
+class CodecInfo(tuple):
+    """Codec details when looking up the codec registry"""
+
+    # Private API to allow Python 3.4 to denylist the known non-Unicode
+    # codecs in the standard library. A more general mechanism to
+    # reliably distinguish test encodings from other codecs will hopefully
+    # be defined for Python 3.5
+    #
+    # See http://bugs.python.org/issue19619
+    _is_text_encoding = True # Assume codecs are text encodings by default
+
+    def __new__(cls, encode, decode, streamreader=None, streamwriter=None,
+        incrementalencoder=None, incrementaldecoder=None, name=None,
+        *, _is_text_encoding=None):
+        self = tuple.__new__(cls, (encode, decode, streamreader, streamwriter))
+        self.name = name
+        self.encode = encode
+        self.decode = decode
+        self.incrementalencoder = incrementalencoder
+        self.incrementaldecoder = incrementaldecoder
+        self.streamwriter = streamwriter
+        self.streamreader = streamreader
+        if _is_text_encoding is not None:
+            self._is_text_encoding = _is_text_encoding
+        return self
+
+    def __repr__(self):
+        return "<%s.%s object for encoding %s at %#x>" % \
+                (self.__class__.__module__, self.__class__.__qualname__,
+                 self.name, id(self))
+
+class Codec:
+
+    """ Defines the interface for stateless encoders/decoders.
+
+        The .encode()/.decode() methods may use different error
+        handling schemes by providing the errors argument. These
+        string values are predefined:
+
+         'strict' - raise a ValueError error (or a subclass)
+         'ignore' - ignore the character and continue with the next
+         'replace' - replace with a suitable replacement character;
+                    Python will use the official U+FFFD REPLACEMENT
+                    CHARACTER for the builtin Unicode codecs on
+                    decoding and '?' on encoding.
+         'surrogateescape' - replace with private code points U+DCnn.
+         'xmlcharrefreplace' - Replace with the appropriate XML
+                               character reference (only for encoding).
+         'backslashreplace'  - Replace with backslashed escape sequences.
+         'namereplace'       - Replace with \\N{...} escape sequences
+                               (only for encoding).
+
+        The set of allowed values can be extended via register_error.
+
+    """
+    def encode(self, input, errors='strict'):
+
+        """ Encodes the object input and returns a tuple (output
+            object, length consumed).
+
+            errors defines the error handling to apply. It defaults to
+            'strict' handling.
+
+            The method may not store state in the Codec instance. Use
+            StreamWriter for codecs which have to keep state in order to
+            make encoding efficient.
+
+            The encoder must be able to handle zero length input and
+            return an empty object of the output object type in this
+            situation.
+
+        """
+        raise NotImplementedError
+
+    def decode(self, input, errors='strict'):
+
+        """ Decodes the object input and returns a tuple (output
+            object, length consumed).
+
+            input must be an object which provides the bf_getreadbuf
+            buffer slot. Python strings, buffer objects and memory
+            mapped files are examples of objects providing this slot.
+
+            errors defines the error handling to apply. It defaults to
+            'strict' handling.
+
+            The method may not store state in the Codec instance. Use
+            StreamReader for codecs which have to keep state in order to
+            make decoding efficient.
+
+            The decoder must be able to handle zero length input and
+            return an empty object of the output object type in this
+            situation.
+
+        """
+        raise NotImplementedError
+
+class IncrementalEncoder(object):
+    """
+    An IncrementalEncoder encodes an input in multiple steps. The input can
+    be passed piece by piece to the encode() method. The IncrementalEncoder
+    remembers the state of the encoding process between calls to encode().
+    """
+    def __init__(self, errors='strict'):
+        """
+        Creates an IncrementalEncoder instance.
+
+        The IncrementalEncoder may use different error handling schemes by
+        providing the errors keyword argument. See the module docstring
+        for a list of possible values.
+        """
+        self.errors = errors
+        self.buffer = ""
+
+    def encode(self, input, final=False):
+        """
+        Encodes input and returns the resulting object.
+        """
+        raise NotImplementedError
+
+    def reset(self):
+        """
+        Resets the encoder to the initial state.
+        """
+
+    def getstate(self):
+        """
+        Return the current state of the encoder.
+        """
+        return 0
+
+    def setstate(self, state):
+        """
+        Set the current state of the encoder. state must have been
+        returned by getstate().
+        """
+
+class BufferedIncrementalEncoder(IncrementalEncoder):
+    """
+    This subclass of IncrementalEncoder can be used as the baseclass for an
+    incremental encoder if the encoder must keep some of the output in a
+    buffer between calls to encode().
+    """
+    def __init__(self, errors='strict'):
+        IncrementalEncoder.__init__(self, errors)
+        # unencoded input that is kept between calls to encode()
+        self.buffer = ""
+
+    def _buffer_encode(self, input, errors, final):
+        # Overwrite this method in subclasses: It must encode input
+        # and return an (output, length consumed) tuple
+        raise NotImplementedError
+
+    def encode(self, input, final=False):
+        # encode input (taking the buffer into account)
+        data = self.buffer + input
+        (result, consumed) = self._buffer_encode(data, self.errors, final)
+        # keep unencoded input until the next call
+        self.buffer = data[consumed:]
+        return result
+
+    def reset(self):
+        IncrementalEncoder.reset(self)
+        self.buffer = ""
+
+    def getstate(self):
+        return self.buffer or 0
+
+    def setstate(self, state):
+        self.buffer = state or ""
+
+class IncrementalDecoder(object):
+    """
+    An IncrementalDecoder decodes an input in multiple steps. The input can
+    be passed piece by piece to the decode() method. The IncrementalDecoder
+    remembers the state of the decoding process between calls to decode().
+    """
+    def __init__(self, errors='strict'):
+        """
+        Create an IncrementalDecoder instance.
+
+        The IncrementalDecoder may use different error handling schemes by
+        providing the errors keyword argument. See the module docstring
+        for a list of possible values.
+        """
+        self.errors = errors
+
+    def decode(self, input, final=False):
+        """
+        Decode input and returns the resulting object.
+        """
+        raise NotImplementedError
+
+    def reset(self):
+        """
+        Reset the decoder to the initial state.
+        """
+
+    def getstate(self):
+        """
+        Return the current state of the decoder.
+
+        This must be a (buffered_input, additional_state_info) tuple.
+        buffered_input must be a bytes object containing bytes that
+        were passed to decode() that have not yet been converted.
+        additional_state_info must be a non-negative integer
+        representing the state of the decoder WITHOUT yet having
+        processed the contents of buffered_input.  In the initial state
+        and after reset(), getstate() must return (b"", 0).
+        """
+        return (b"", 0)
+
+    def setstate(self, state):
+        """
+        Set the current state of the decoder.
+
+        state must have been returned by getstate().  The effect of
+        setstate((b"", 0)) must be equivalent to reset().
+        """
+
+class BufferedIncrementalDecoder(IncrementalDecoder):
+    """
+    This subclass of IncrementalDecoder can be used as the baseclass for an
+    incremental decoder if the decoder must be able to handle incomplete
+    byte sequences.
+    """
+    def __init__(self, errors='strict'):
+        IncrementalDecoder.__init__(self, errors)
+        # undecoded input that is kept between calls to decode()
+        self.buffer = b""
+
+    def _buffer_decode(self, input, errors, final):
+        # Overwrite this method in subclasses: It must decode input
+        # and return an (output, length consumed) tuple
+        raise NotImplementedError
+
+    def decode(self, input, final=False):
+        # decode input (taking the buffer into account)
+        data = self.buffer + input
+        (result, consumed) = self._buffer_decode(data, self.errors, final)
+        # keep undecoded input until the next call
+        self.buffer = data[consumed:]
+        return result
+
+    def reset(self):
+        IncrementalDecoder.reset(self)
+        self.buffer = b""
+
+    def getstate(self):
+        # additional state info is always 0
+        return (self.buffer, 0)
+
+    def setstate(self, state):
+        # ignore additional state info
+        self.buffer = state[0]
+
+#
+# The StreamWriter and StreamReader class provide generic working
+# interfaces which can be used to implement new encoding submodules
+# very easily. See encodings/utf_8.py for an example on how this is
+# done.
+#
+
+class StreamWriter(Codec):
+
+    def __init__(self, stream, errors='strict'):
+
+        """ Creates a StreamWriter instance.
+
+            stream must be a file-like object open for writing.
+
+            The StreamWriter may use different error handling
+            schemes by providing the errors keyword argument. These
+            parameters are predefined:
+
+             'strict' - raise a ValueError (or a subclass)
+             'ignore' - ignore the character and continue with the next
+             'replace'- replace with a suitable replacement character
+             'xmlcharrefreplace' - Replace with the appropriate XML
+                                   character reference.
+             'backslashreplace'  - Replace with backslashed escape
+                                   sequences.
+             'namereplace'       - Replace with \\N{...} escape sequences.
+
+            The set of allowed parameter values can be extended via
+            register_error.
+        """
+        self.stream = stream
+        self.errors = errors
+
+    def write(self, object):
+
+        """ Writes the object's contents encoded to self.stream.
+        """
+        data, consumed = self.encode(object, self.errors)
+        self.stream.write(data)
+
+    def writelines(self, list):
+
+        """ Writes the concatenated list of strings to the stream
+            using .write().
+        """
+        self.write(''.join(list))
+
+    def reset(self):
+
+        """ Resets the codec buffers used for keeping internal state.
+
+            Calling this method should ensure that the data on the
+            output is put into a clean state, that allows appending
+            of new fresh data without having to rescan the whole
+            stream to recover state.
+
+        """
+        pass
+
+    def seek(self, offset, whence=0):
+        self.stream.seek(offset, whence)
+        if whence == 0 and offset == 0:
+            self.reset()
+
+    def __getattr__(self, name,
+                    getattr=getattr):
+
+        """ Inherit all other methods from the underlying stream.
+        """
+        return getattr(self.stream, name)
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type, value, tb):
+        self.stream.close()
+
+###
+
+class StreamReader(Codec):
+
+    charbuffertype = str
+
+    def __init__(self, stream, errors='strict'):
+
+        """ Creates a StreamReader instance.
+
+            stream must be a file-like object open for reading.
+
+            The StreamReader may use different error handling
+            schemes by providing the errors keyword argument. These
+            parameters are predefined:
+
+             'strict' - raise a ValueError (or a subclass)
+             'ignore' - ignore the character and continue with the next
+             'replace'- replace with a suitable replacement character
+             'backslashreplace' - Replace with backslashed escape sequences;
+
+            The set of allowed parameter values can be extended via
+            register_error.
+        """
+        self.stream = stream
+        self.errors = errors
+        self.bytebuffer = b""
+        self._empty_charbuffer = self.charbuffertype()
+        self.charbuffer = self._empty_charbuffer
+        self.linebuffer = None
+
+    def decode(self, input, errors='strict'):
+        raise NotImplementedError
+
+    def read(self, size=-1, chars=-1, firstline=False):
+
+        """ Decodes data from the stream self.stream and returns the
+            resulting object.
+
+            chars indicates the number of decoded code points or bytes to
+            return. read() will never return more data than requested,
+            but it might return less, if there is not enough available.
+
+            size indicates the approximate maximum number of decoded
+            bytes or code points to read for decoding. The decoder
+            can modify this setting as appropriate. The default value
+            -1 indicates to read and decode as much as possible.  size
+            is intended to prevent having to decode huge files in one
+            step.
+
+            If firstline is true, and a UnicodeDecodeError happens
+            after the first line terminator in the input only the first line
+            will be returned, the rest of the input will be kept until the
+            next call to read().
+
+            The method should use a greedy read strategy, meaning that
+            it should read as much data as is allowed within the
+            definition of the encoding and the given size, e.g.  if
+            optional encoding endings or state markers are available
+            on the stream, these should be read too.
+        """
+        # If we have lines cached, first merge them back into characters
+        if self.linebuffer:
+            self.charbuffer = self._empty_charbuffer.join(self.linebuffer)
+            self.linebuffer = None
+
+        if chars < 0:
+            # For compatibility with other read() methods that take a
+            # single argument
+            chars = size
+
+        # read until we get the required number of characters (if available)
+        while True:
+            # can the request be satisfied from the character buffer?
+            if chars >= 0:
+                if len(self.charbuffer) >= chars:
+                    break
+            # we need more data
+            if size < 0:
+                newdata = self.stream.read()
+            else:
+                newdata = self.stream.read(size)
+            # decode bytes (those remaining from the last call included)
+            data = self.bytebuffer + newdata
+            if not data:
+                break
+            try:
+                newchars, decodedbytes = self.decode(data, self.errors)
+            except UnicodeDecodeError as exc:
+                if firstline:
+                    newchars, decodedbytes = \
+                        self.decode(data[:exc.start], self.errors)
+                    lines = newchars.splitlines(keepends=True)
+                    if len(lines)<=1:
+                        raise
+                else:
+                    raise
+            # keep undecoded bytes until the next call
+            self.bytebuffer = data[decodedbytes:]
+            # put new characters in the character buffer
+            self.charbuffer += newchars
+            # there was no data available
+            if not newdata:
+                break
+        if chars < 0:
+            # Return everything we've got
+            result = self.charbuffer
+            self.charbuffer = self._empty_charbuffer
+        else:
+            # Return the first chars characters
+            result = self.charbuffer[:chars]
+            self.charbuffer = self.charbuffer[chars:]
+        return result
+
+    def readline(self, size=None, keepends=True):
+
+        """ Read one line from the input stream and return the
+            decoded data.
+
+            size, if given, is passed as size argument to the
+            read() method.
+
+        """
+        # If we have lines cached from an earlier read, return
+        # them unconditionally
+        if self.linebuffer:
+            line = self.linebuffer[0]
+            del self.linebuffer[0]
+            if len(self.linebuffer) == 1:
+                # revert to charbuffer mode; we might need more data
+                # next time
+                self.charbuffer = self.linebuffer[0]
+                self.linebuffer = None
+            if not keepends:
+                line = line.splitlines(keepends=False)[0]
+            return line
+
+        readsize = size or 72
+        line = self._empty_charbuffer
+        # If size is given, we call read() only once
+        while True:
+            data = self.read(readsize, firstline=True)
+            if data:
+                # If we're at a "\r" read one extra character (which might
+                # be a "\n") to get a proper line ending. If the stream is
+                # temporarily exhausted we return the wrong line ending.
+                if (isinstance(data, str) and data.endswith("\r")) or \
+                   (isinstance(data, bytes) and data.endswith(b"\r")):
+                    data += self.read(size=1, chars=1)
+
+            line += data
+            lines = line.splitlines(keepends=True)
+            if lines:
+                if len(lines) > 1:
+                    # More than one line result; the first line is a full line
+                    # to return
+                    line = lines[0]
+                    del lines[0]
+                    if len(lines) > 1:
+                        # cache the remaining lines
+                        lines[-1] += self.charbuffer
+                        self.linebuffer = lines
+                        self.charbuffer = None
+                    else:
+                        # only one remaining line, put it back into charbuffer
+                        self.charbuffer = lines[0] + self.charbuffer
+                    if not keepends:
+                        line = line.splitlines(keepends=False)[0]
+                    break
+                line0withend = lines[0]
+                line0withoutend = lines[0].splitlines(keepends=False)[0]
+                if line0withend != line0withoutend: # We really have a line end
+                    # Put the rest back together and keep it until the next call
+                    self.charbuffer = self._empty_charbuffer.join(lines[1:]) + \
+                                      self.charbuffer
+                    if keepends:
+                        line = line0withend
+                    else:
+                        line = line0withoutend
+                    break
+            # we didn't get anything or this was our only try
+            if not data or size is not None:
+                if line and not keepends:
+                    line = line.splitlines(keepends=False)[0]
+                break
+            if readsize < 8000:
+                readsize *= 2
+        return line
+
+    def readlines(self, sizehint=None, keepends=True):
+
+        """ Read all lines available on the input stream
+            and return them as a list.
+
+            Line breaks are implemented using the codec's decoder
+            method and are included in the list entries.
+
+            sizehint, if given, is ignored since there is no efficient
+            way to finding the true end-of-line.
+
+        """
+        data = self.read()
+        return data.splitlines(keepends)
+
+    def reset(self):
+
+        """ Resets the codec buffers used for keeping internal state.
+
+            Note that no stream repositioning should take place.
+            This method is primarily intended to be able to recover
+            from decoding errors.
+
+        """
+        self.bytebuffer = b""
+        self.charbuffer = self._empty_charbuffer
+        self.linebuffer = None
+
+    def seek(self, offset, whence=0):
+        """ Set the input stream's current position.
+
+            Resets the codec buffers used for keeping state.
+        """
+        self.stream.seek(offset, whence)
+        self.reset()
+
+    def __next__(self):
+
+        """ Return the next decoded line from the input stream."""
+        line = self.readline()
+        if line:
+            return line
+        raise StopIteration
+
+    def __iter__(self):
+        return self
+
+    def __getattr__(self, name,
+                    getattr=getattr):
+
+        """ Inherit all other methods from the underlying stream.
+        """
+        return getattr(self.stream, name)
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type, value, tb):
+        self.stream.close()
+
+###
+
+class StreamReaderWriter:
+
+    """ StreamReaderWriter instances allow wrapping streams which
+        work in both read and write modes.
+
+        The design is such that one can use the factory functions
+        returned by the codec.lookup() function to construct the
+        instance.
+
+    """
+    # Optional attributes set by the file wrappers below
+    encoding = 'unknown'
+
+    def __init__(self, stream, Reader, Writer, errors='strict'):
+
+        """ Creates a StreamReaderWriter instance.
+
+            stream must be a Stream-like object.
+
+            Reader, Writer must be factory functions or classes
+            providing the StreamReader, StreamWriter interface resp.
+
+            Error handling is done in the same way as defined for the
+            StreamWriter/Readers.
+
+        """
+        self.stream = stream
+        self.reader = Reader(stream, errors)
+        self.writer = Writer(stream, errors)
+        self.errors = errors
+
+    def read(self, size=-1):
+
+        return self.reader.read(size)
+
+    def readline(self, size=None):
+
+        return self.reader.readline(size)
+
+    def readlines(self, sizehint=None):
+
+        return self.reader.readlines(sizehint)
+
+    def __next__(self):
+
+        """ Return the next decoded line from the input stream."""
+        return next(self.reader)
+
+    def __iter__(self):
+        return self
+
+    def write(self, data):
+
+        return self.writer.write(data)
+
+    def writelines(self, list):
+
+        return self.writer.writelines(list)
+
+    def reset(self):
+
+        self.reader.reset()
+        self.writer.reset()
+
+    def seek(self, offset, whence=0):
+        self.stream.seek(offset, whence)
+        self.reader.reset()
+        if whence == 0 and offset == 0:
+            self.writer.reset()
+
+    def __getattr__(self, name,
+                    getattr=getattr):
+
+        """ Inherit all other methods from the underlying stream.
+        """
+        return getattr(self.stream, name)
+
+    # these are needed to make "with StreamReaderWriter(...)" work properly
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type, value, tb):
+        self.stream.close()
+
+###
+
+class StreamRecoder:
+
+    """ StreamRecoder instances translate data from one encoding to another.
+
+        They use the complete set of APIs returned by the
+        codecs.lookup() function to implement their task.
+
+        Data written to the StreamRecoder is first decoded into an
+        intermediate format (depending on the "decode" codec) and then
+        written to the underlying stream using an instance of the provided
+        Writer class.
+
+        In the other direction, data is read from the underlying stream using
+        a Reader instance and then encoded and returned to the caller.
+
+    """
+    # Optional attributes set by the file wrappers below
+    data_encoding = 'unknown'
+    file_encoding = 'unknown'
+
+    def __init__(self, stream, encode, decode, Reader, Writer,
+                 errors='strict'):
+
+        """ Creates a StreamRecoder instance which implements a two-way
+            conversion: encode and decode work on the frontend (the
+            data visible to .read() and .write()) while Reader and Writer
+            work on the backend (the data in stream).
+
+            You can use these objects to do transparent
+            transcodings from e.g. latin-1 to utf-8 and back.
+
+            stream must be a file-like object.
+
+            encode and decode must adhere to the Codec interface; Reader and
+            Writer must be factory functions or classes providing the
+            StreamReader and StreamWriter interfaces resp.
+
+            Error handling is done in the same way as defined for the
+            StreamWriter/Readers.
+
+        """
+        self.stream = stream
+        self.encode = encode
+        self.decode = decode
+        self.reader = Reader(stream, errors)
+        self.writer = Writer(stream, errors)
+        self.errors = errors
+
+    def read(self, size=-1):
+
+        data = self.reader.read(size)
+        data, bytesencoded = self.encode(data, self.errors)
+        return data
+
+    def readline(self, size=None):
+
+        if size is None:
+            data = self.reader.readline()
+        else:
+            data = self.reader.readline(size)
+        data, bytesencoded = self.encode(data, self.errors)
+        return data
+
+    def readlines(self, sizehint=None):
+
+        data = self.reader.read()
+        data, bytesencoded = self.encode(data, self.errors)
+        return data.splitlines(keepends=True)
+
+    def __next__(self):
+
+        """ Return the next decoded line from the input stream."""
+        data = next(self.reader)
+        data, bytesencoded = self.encode(data, self.errors)
+        return data
+
+    def __iter__(self):
+        return self
+
+    def write(self, data):
+
+        data, bytesdecoded = self.decode(data, self.errors)
+        return self.writer.write(data)
+
+    def writelines(self, list):
+
+        data = b''.join(list)
+        data, bytesdecoded = self.decode(data, self.errors)
+        return self.writer.write(data)
+
+    def reset(self):
+
+        self.reader.reset()
+        self.writer.reset()
+
+    def seek(self, offset, whence=0):
+        # Seeks must be propagated to both the readers and writers
+        # as they might need to reset their internal buffers.
+        self.reader.seek(offset, whence)
+        self.writer.seek(offset, whence)
+
+    def __getattr__(self, name,
+                    getattr=getattr):
+
+        """ Inherit all other methods from the underlying stream.
+        """
+        return getattr(self.stream, name)
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type, value, tb):
+        self.stream.close()
+
+### Shortcuts
+
+def open(filename, mode='r', encoding=None, errors='strict', buffering=-1):
+
+    """ Open an encoded file using the given mode and return
+        a wrapped version providing transparent encoding/decoding.
+
+        Note: The wrapped version will only accept the object format
+        defined by the codecs, i.e. Unicode objects for most builtin
+        codecs. Output is also codec dependent and will usually be
+        Unicode as well.
+
+        If encoding is not None, then the
+        underlying encoded files are always opened in binary mode.
+        The default file mode is 'r', meaning to open the file in read mode.
+
+        encoding specifies the encoding which is to be used for the
+        file.
+
+        errors may be given to define the error handling. It defaults
+        to 'strict' which causes ValueErrors to be raised in case an
+        encoding error occurs.
+
+        buffering has the same meaning as for the builtin open() API.
+        It defaults to -1 which means that the default buffer size will
+        be used.
+
+        The returned wrapped file object provides an extra attribute
+        .encoding which allows querying the used encoding. This
+        attribute is only available if an encoding was specified as
+        parameter.
+
+    """
+    if encoding is not None and \
+       'b' not in mode:
+        # Force opening of the file in binary mode
+        mode = mode + 'b'
+    file = builtins.open(filename, mode, buffering)
+    if encoding is None:
+        return file
+
+    try:
+        info = lookup(encoding)
+        srw = StreamReaderWriter(file, info.streamreader, info.streamwriter, errors)
+        # Add attributes to simplify introspection
+        srw.encoding = encoding
+        return srw
+    except:
+        file.close()
+        raise
+
+def EncodedFile(file, data_encoding, file_encoding=None, errors='strict'):
+
+    """ Return a wrapped version of file which provides transparent
+        encoding translation.
+
+        Data written to the wrapped file is decoded according
+        to the given data_encoding and then encoded to the underlying
+        file using file_encoding. The intermediate data type
+        will usually be Unicode but depends on the specified codecs.
+
+        Bytes read from the file are decoded using file_encoding and then
+        passed back to the caller encoded using data_encoding.
+
+        If file_encoding is not given, it defaults to data_encoding.
+
+        errors may be given to define the error handling. It defaults
+        to 'strict' which causes ValueErrors to be raised in case an
+        encoding error occurs.
+
+        The returned wrapped file object provides two extra attributes
+        .data_encoding and .file_encoding which reflect the given
+        parameters of the same name. The attributes can be used for
+        introspection by Python programs.
+
+    """
+    if file_encoding is None:
+        file_encoding = data_encoding
+    data_info = lookup(data_encoding)
+    file_info = lookup(file_encoding)
+    sr = StreamRecoder(file, data_info.encode, data_info.decode,
+                       file_info.streamreader, file_info.streamwriter, errors)
+    # Add attributes to simplify introspection
+    sr.data_encoding = data_encoding
+    sr.file_encoding = file_encoding
+    return sr
+
+### Helpers for codec lookup
+
+def getencoder(encoding):
+
+    """ Lookup up the codec for the given encoding and return
+        its encoder function.
+
+        Raises a LookupError in case the encoding cannot be found.
+
+    """
+    return lookup(encoding).encode
+
+def getdecoder(encoding):
+
+    """ Lookup up the codec for the given encoding and return
+        its decoder function.
+
+        Raises a LookupError in case the encoding cannot be found.
+
+    """
+    return lookup(encoding).decode
+
+def getincrementalencoder(encoding):
+
+    """ Lookup up the codec for the given encoding and return
+        its IncrementalEncoder class or factory function.
+
+        Raises a LookupError in case the encoding cannot be found
+        or the codecs doesn't provide an incremental encoder.
+
+    """
+    encoder = lookup(encoding).incrementalencoder
+    if encoder is None:
+        raise LookupError(encoding)
+    return encoder
+
+def getincrementaldecoder(encoding):
+
+    """ Lookup up the codec for the given encoding and return
+        its IncrementalDecoder class or factory function.
+
+        Raises a LookupError in case the encoding cannot be found
+        or the codecs doesn't provide an incremental decoder.
+
+    """
+    decoder = lookup(encoding).incrementaldecoder
+    if decoder is None:
+        raise LookupError(encoding)
+    return decoder
+
+def getreader(encoding):
+
+    """ Lookup up the codec for the given encoding and return
+        its StreamReader class or factory function.
+
+        Raises a LookupError in case the encoding cannot be found.
+
+    """
+    return lookup(encoding).streamreader
+
+def getwriter(encoding):
+
+    """ Lookup up the codec for the given encoding and return
+        its StreamWriter class or factory function.
+
+        Raises a LookupError in case the encoding cannot be found.
+
+    """
+    return lookup(encoding).streamwriter
+
+def iterencode(iterator, encoding, errors='strict', **kwargs):
+    """
+    Encoding iterator.
+
+    Encodes the input strings from the iterator using an IncrementalEncoder.
+
+    errors and kwargs are passed through to the IncrementalEncoder
+    constructor.
+    """
+    encoder = getincrementalencoder(encoding)(errors, **kwargs)
+    for input in iterator:
+        output = encoder.encode(input)
+        if output:
+            yield output
+    output = encoder.encode("", True)
+    if output:
+        yield output
+
+def iterdecode(iterator, encoding, errors='strict', **kwargs):
+    """
+    Decoding iterator.
+
+    Decodes the input strings from the iterator using an IncrementalDecoder.
+
+    errors and kwargs are passed through to the IncrementalDecoder
+    constructor.
+    """
+    decoder = getincrementaldecoder(encoding)(errors, **kwargs)
+    for input in iterator:
+        output = decoder.decode(input)
+        if output:
+            yield output
+    output = decoder.decode(b"", True)
+    if output:
+        yield output
+
+### Helpers for charmap-based codecs
+
+def make_identity_dict(rng):
+
+    """ make_identity_dict(rng) -> dict
+
+        Return a dictionary where elements of the rng sequence are
+        mapped to themselves.
+
+    """
+    return {i:i for i in rng}
+
+def make_encoding_map(decoding_map):
+
+    """ Creates an encoding map from a decoding map.
+
+        If a target mapping in the decoding map occurs multiple
+        times, then that target is mapped to None (undefined mapping),
+        causing an exception when encountered by the charmap codec
+        during translation.
+
+        One example where this happens is cp875.py which decodes
+        multiple character to \\u001a.
+
+    """
+    m = {}
+    for k,v in decoding_map.items():
+        if not v in m:
+            m[v] = k
+        else:
+            m[v] = None
+    return m
+
+### error handlers
+
+try:
+    strict_errors = lookup_error("strict")
+    ignore_errors = lookup_error("ignore")
+    replace_errors = lookup_error("replace")
+    xmlcharrefreplace_errors = lookup_error("xmlcharrefreplace")
+    backslashreplace_errors = lookup_error("backslashreplace")
+    namereplace_errors = lookup_error("namereplace")
+except LookupError:
+    # In --disable-unicode builds, these error handler are missing
+    strict_errors = None
+    ignore_errors = None
+    replace_errors = None
+    xmlcharrefreplace_errors = None
+    backslashreplace_errors = None
+    namereplace_errors = None
+
+# Tell modulefinder that using codecs probably needs the encodings
+# package
+_false = 0
+if _false:
+    import encodings
+
+### Tests
+
+if __name__ == '__main__':
+
+    # Make stdout translate Latin-1 output into UTF-8 output
+    sys.stdout = EncodedFile(sys.stdout, 'latin-1', 'utf-8')
+
+    # Have stdin translate Latin-1 input into UTF-8 input
+    sys.stdin = EncodedFile(sys.stdin, 'utf-8', 'latin-1')

evalkit_tf446/lib/python3.10/codeop.py

@@ -0,0 +1,153 @@
+r"""Utilities to compile possibly incomplete Python source code.
+
+This module provides two interfaces, broadly similar to the builtin
+function compile(), which take program text, a filename and a 'mode'
+and:
+
+- Return code object if the command is complete and valid
+- Return None if the command is incomplete
+- Raise SyntaxError, ValueError or OverflowError if the command is a
+  syntax error (OverflowError and ValueError can be produced by
+  malformed literals).
+
+The two interfaces are:
+
+compile_command(source, filename, symbol):
+
+    Compiles a single command in the manner described above.
+
+CommandCompiler():
+
+    Instances of this class have __call__ methods identical in
+    signature to compile_command; the difference is that if the
+    instance compiles program text containing a __future__ statement,
+    the instance 'remembers' and compiles all subsequent program texts
+    with the statement in force.
+
+The module also provides another class:
+
+Compile():
+
+    Instances of this class act like the built-in function compile,
+    but with 'memory' in the sense described above.
+"""
+
+import __future__
+import warnings
+
+_features = [getattr(__future__, fname)
+             for fname in __future__.all_feature_names]
+
+__all__ = ["compile_command", "Compile", "CommandCompiler"]
+
+# The following flags match the values from Include/cpython/compile.h
+# Caveat emptor: These flags are undocumented on purpose and depending
+# on their effect outside the standard library is **unsupported**.
+PyCF_DONT_IMPLY_DEDENT = 0x200          
+PyCF_ALLOW_INCOMPLETE_INPUT = 0x4000
+
+def _maybe_compile(compiler, source, filename, symbol):
+    # Check for source consisting of only blank lines and comments.
+    for line in source.split("\n"):
+        line = line.strip()
+        if line and line[0] != '#':
+            break               # Leave it alone.
+    else:
+        if symbol != "eval":
+            source = "pass"     # Replace it with a 'pass' statement
+
+    # Disable compiler warnings when checking for incomplete input.
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", (SyntaxWarning, DeprecationWarning))
+        try:
+            compiler(source, filename, symbol)
+        except SyntaxError:  # Let other compile() errors propagate.
+            try:
+                compiler(source + "\n", filename, symbol)
+                return None
+            except SyntaxError as e:
+                if "incomplete input" in str(e):
+                    return None
+                # fallthrough
+
+    return compiler(source, filename, symbol)
+
+
+def _is_syntax_error(err1, err2):
+    rep1 = repr(err1)
+    rep2 = repr(err2)
+    if "was never closed" in rep1 and "was never closed" in rep2:
+        return False
+    if rep1 == rep2:
+        return True
+    return False
+
+def _compile(source, filename, symbol):
+    return compile(source, filename, symbol, PyCF_DONT_IMPLY_DEDENT | PyCF_ALLOW_INCOMPLETE_INPUT)
+
+def compile_command(source, filename="<input>", symbol="single"):
+    r"""Compile a command and determine whether it is incomplete.
+
+    Arguments:
+
+    source -- the source string; may contain \n characters
+    filename -- optional filename from which source was read; default
+                "<input>"
+    symbol -- optional grammar start symbol; "single" (default), "exec"
+              or "eval"
+
+    Return value / exceptions raised:
+
+    - Return a code object if the command is complete and valid
+    - Return None if the command is incomplete
+    - Raise SyntaxError, ValueError or OverflowError if the command is a
+      syntax error (OverflowError and ValueError can be produced by
+      malformed literals).
+    """
+    return _maybe_compile(_compile, source, filename, symbol)
+
+class Compile:
+    """Instances of this class behave much like the built-in compile
+    function, but if one is used to compile text containing a future
+    statement, it "remembers" and compiles all subsequent program texts
+    with the statement in force."""
+    def __init__(self):
+        self.flags = PyCF_DONT_IMPLY_DEDENT | PyCF_ALLOW_INCOMPLETE_INPUT
+
+    def __call__(self, source, filename, symbol):
+        codeob = compile(source, filename, symbol, self.flags, True)
+        for feature in _features:
+            if codeob.co_flags & feature.compiler_flag:
+                self.flags |= feature.compiler_flag
+        return codeob
+
+class CommandCompiler:
+    """Instances of this class have __call__ methods identical in
+    signature to compile_command; the difference is that if the
+    instance compiles program text containing a __future__ statement,
+    the instance 'remembers' and compiles all subsequent program texts
+    with the statement in force."""
+
+    def __init__(self,):
+        self.compiler = Compile()
+
+    def __call__(self, source, filename="<input>", symbol="single"):
+        r"""Compile a command and determine whether it is incomplete.
+
+        Arguments:
+
+        source -- the source string; may contain \n characters
+        filename -- optional filename from which source was read;
+                    default "<input>"
+        symbol -- optional grammar start symbol; "single" (default) or
+                  "eval"
+
+        Return value / exceptions raised:
+
+        - Return a code object if the command is complete and valid
+        - Return None if the command is incomplete
+        - Raise SyntaxError, ValueError or OverflowError if the command is a
+          syntax error (OverflowError and ValueError can be produced by
+          malformed literals).
+        """
+        return _maybe_compile(self.compiler, source, filename, symbol)

evalkit_tf446/lib/python3.10/compileall.py

@@ -0,0 +1,463 @@
+"""Module/script to byte-compile all .py files to .pyc files.
+
+When called as a script with arguments, this compiles the directories
+given as arguments recursively; the -l option prevents it from
+recursing into directories.
+
+Without arguments, if compiles all modules on sys.path, without
+recursing into subdirectories.  (Even though it should do so for
+packages -- for now, you'll have to deal with packages separately.)
+
+See module py_compile for details of the actual byte-compilation.
+"""
+import os
+import sys
+import importlib.util
+import py_compile
+import struct
+import filecmp
+
+from functools import partial
+from pathlib import Path
+
+__all__ = ["compile_dir","compile_file","compile_path"]
+
+def _walk_dir(dir, maxlevels, quiet=0):
+    if quiet < 2 and isinstance(dir, os.PathLike):
+        dir = os.fspath(dir)
+    if not quiet:
+        print('Listing {!r}...'.format(dir))
+    try:
+        names = os.listdir(dir)
+    except OSError:
+        if quiet < 2:
+            print("Can't list {!r}".format(dir))
+        names = []
+    names.sort()
+    for name in names:
+        if name == '__pycache__':
+            continue
+        fullname = os.path.join(dir, name)
+        if not os.path.isdir(fullname):
+            yield fullname
+        elif (maxlevels > 0 and name != os.curdir and name != os.pardir and
+              os.path.isdir(fullname) and not os.path.islink(fullname)):
+            yield from _walk_dir(fullname, maxlevels=maxlevels - 1,
+                                 quiet=quiet)
+
+def compile_dir(dir, maxlevels=None, ddir=None, force=False,
+                rx=None, quiet=0, legacy=False, optimize=-1, workers=1,
+                invalidation_mode=None, *, stripdir=None,
+                prependdir=None, limit_sl_dest=None, hardlink_dupes=False):
+    """Byte-compile all modules in the given directory tree.
+
+    Arguments (only dir is required):
+
+    dir:       the directory to byte-compile
+    maxlevels: maximum recursion level (default `sys.getrecursionlimit()`)
+    ddir:      the directory that will be prepended to the path to the
+               file as it is compiled into each byte-code file.
+    force:     if True, force compilation, even if timestamps are up-to-date
+    quiet:     full output with False or 0, errors only with 1,
+               no output with 2
+    legacy:    if True, produce legacy pyc paths instead of PEP 3147 paths
+    optimize:  int or list of optimization levels or -1 for level of
+               the interpreter. Multiple levels leads to multiple compiled
+               files each with one optimization level.
+    workers:   maximum number of parallel workers
+    invalidation_mode: how the up-to-dateness of the pyc will be checked
+    stripdir:  part of path to left-strip from source file path
+    prependdir: path to prepend to beginning of original file path, applied
+               after stripdir
+    limit_sl_dest: ignore symlinks if they are pointing outside of
+                   the defined path
+    hardlink_dupes: hardlink duplicated pyc files
+    """
+    ProcessPoolExecutor = None
+    if ddir is not None and (stripdir is not None or prependdir is not None):
+        raise ValueError(("Destination dir (ddir) cannot be used "
+                          "in combination with stripdir or prependdir"))
+    if ddir is not None:
+        stripdir = dir
+        prependdir = ddir
+        ddir = None
+    if workers < 0:
+        raise ValueError('workers must be greater or equal to 0')
+    if workers != 1:
+        # Check if this is a system where ProcessPoolExecutor can function.
+        from concurrent.futures.process import _check_system_limits
+        try:
+            _check_system_limits()
+        except NotImplementedError:
+            workers = 1
+        else:
+            from concurrent.futures import ProcessPoolExecutor
+    if maxlevels is None:
+        maxlevels = sys.getrecursionlimit()
+    files = _walk_dir(dir, quiet=quiet, maxlevels=maxlevels)
+    success = True
+    if workers != 1 and ProcessPoolExecutor is not None:
+        # If workers == 0, let ProcessPoolExecutor choose
+        workers = workers or None
+        with ProcessPoolExecutor(max_workers=workers) as executor:
+            results = executor.map(partial(compile_file,
+                                           ddir=ddir, force=force,
+                                           rx=rx, quiet=quiet,
+                                           legacy=legacy,
+                                           optimize=optimize,
+                                           invalidation_mode=invalidation_mode,
+                                           stripdir=stripdir,
+                                           prependdir=prependdir,
+                                           limit_sl_dest=limit_sl_dest,
+                                           hardlink_dupes=hardlink_dupes),
+                                   files)
+            success = min(results, default=True)
+    else:
+        for file in files:
+            if not compile_file(file, ddir, force, rx, quiet,
+                                legacy, optimize, invalidation_mode,
+                                stripdir=stripdir, prependdir=prependdir,
+                                limit_sl_dest=limit_sl_dest,
+                                hardlink_dupes=hardlink_dupes):
+                success = False
+    return success
+
+def compile_file(fullname, ddir=None, force=False, rx=None, quiet=0,
+                 legacy=False, optimize=-1,
+                 invalidation_mode=None, *, stripdir=None, prependdir=None,
+                 limit_sl_dest=None, hardlink_dupes=False):
+    """Byte-compile one file.
+
+    Arguments (only fullname is required):
+
+    fullname:  the file to byte-compile
+    ddir:      if given, the directory name compiled in to the
+               byte-code file.
+    force:     if True, force compilation, even if timestamps are up-to-date
+    quiet:     full output with False or 0, errors only with 1,
+               no output with 2
+    legacy:    if True, produce legacy pyc paths instead of PEP 3147 paths
+    optimize:  int or list of optimization levels or -1 for level of
+               the interpreter. Multiple levels leads to multiple compiled
+               files each with one optimization level.
+    invalidation_mode: how the up-to-dateness of the pyc will be checked
+    stripdir:  part of path to left-strip from source file path
+    prependdir: path to prepend to beginning of original file path, applied
+               after stripdir
+    limit_sl_dest: ignore symlinks if they are pointing outside of
+                   the defined path.
+    hardlink_dupes: hardlink duplicated pyc files
+    """
+
+    if ddir is not None and (stripdir is not None or prependdir is not None):
+        raise ValueError(("Destination dir (ddir) cannot be used "
+                          "in combination with stripdir or prependdir"))
+
+    success = True
+    fullname = os.fspath(fullname)
+    stripdir = os.fspath(stripdir) if stripdir is not None else None
+    name = os.path.basename(fullname)
+
+    dfile = None
+
+    if ddir is not None:
+        dfile = os.path.join(ddir, name)
+
+    if stripdir is not None:
+        fullname_parts = fullname.split(os.path.sep)
+        stripdir_parts = stripdir.split(os.path.sep)
+        ddir_parts = list(fullname_parts)
+
+        for spart, opart in zip(stripdir_parts, fullname_parts):
+            if spart == opart:
+                ddir_parts.remove(spart)
+
+        dfile = os.path.join(*ddir_parts)
+
+    if prependdir is not None:
+        if dfile is None:
+            dfile = os.path.join(prependdir, fullname)
+        else:
+            dfile = os.path.join(prependdir, dfile)
+
+    if isinstance(optimize, int):
+        optimize = [optimize]
+
+    # Use set() to remove duplicates.
+    # Use sorted() to create pyc files in a deterministic order.
+    optimize = sorted(set(optimize))
+
+    if hardlink_dupes and len(optimize) < 2:
+        raise ValueError("Hardlinking of duplicated bytecode makes sense "
+                          "only for more than one optimization level")
+
+    if rx is not None:
+        mo = rx.search(fullname)
+        if mo:
+            return success
+
+    if limit_sl_dest is not None and os.path.islink(fullname):
+        if Path(limit_sl_dest).resolve() not in Path(fullname).resolve().parents:
+            return success
+
+    opt_cfiles = {}
+
+    if os.path.isfile(fullname):
+        for opt_level in optimize:
+            if legacy:
+                opt_cfiles[opt_level] = fullname + 'c'
+            else:
+                if opt_level >= 0:
+                    opt = opt_level if opt_level >= 1 else ''
+                    cfile = (importlib.util.cache_from_source(
+                             fullname, optimization=opt))
+                    opt_cfiles[opt_level] = cfile
+                else:
+                    cfile = importlib.util.cache_from_source(fullname)
+                    opt_cfiles[opt_level] = cfile
+
+        head, tail = name[:-3], name[-3:]
+        if tail == '.py':
+            if not force:
+                try:
+                    mtime = int(os.stat(fullname).st_mtime)
+                    expect = struct.pack('<4sLL', importlib.util.MAGIC_NUMBER,
+                                         0, mtime & 0xFFFF_FFFF)
+                    for cfile in opt_cfiles.values():
+                        with open(cfile, 'rb') as chandle:
+                            actual = chandle.read(12)
+                        if expect != actual:
+                            break
+                    else:
+                        return success
+                except OSError:
+                    pass
+            if not quiet:
+                print('Compiling {!r}...'.format(fullname))
+            try:
+                for index, opt_level in enumerate(optimize):
+                    cfile = opt_cfiles[opt_level]
+                    ok = py_compile.compile(fullname, cfile, dfile, True,
+                                            optimize=opt_level,
+                                            invalidation_mode=invalidation_mode)
+                    if index > 0 and hardlink_dupes:
+                        previous_cfile = opt_cfiles[optimize[index - 1]]
+                        if filecmp.cmp(cfile, previous_cfile, shallow=False):
+                            os.unlink(cfile)
+                            os.link(previous_cfile, cfile)
+            except py_compile.PyCompileError as err:
+                success = False
+                if quiet >= 2:
+                    return success
+                elif quiet:
+                    print('*** Error compiling {!r}...'.format(fullname))
+                else:
+                    print('*** ', end='')
+                # escape non-printable characters in msg
+                encoding = sys.stdout.encoding or sys.getdefaultencoding()
+                msg = err.msg.encode(encoding, errors='backslashreplace').decode(encoding)
+                print(msg)
+            except (SyntaxError, UnicodeError, OSError) as e:
+                success = False
+                if quiet >= 2:
+                    return success
+                elif quiet:
+                    print('*** Error compiling {!r}...'.format(fullname))
+                else:
+                    print('*** ', end='')
+                print(e.__class__.__name__ + ':', e)
+            else:
+                if ok == 0:
+                    success = False
+    return success
+
+def compile_path(skip_curdir=1, maxlevels=0, force=False, quiet=0,
+                 legacy=False, optimize=-1,
+                 invalidation_mode=None):
+    """Byte-compile all module on sys.path.
+
+    Arguments (all optional):
+
+    skip_curdir: if true, skip current directory (default True)
+    maxlevels:   max recursion level (default 0)
+    force: as for compile_dir() (default False)
+    quiet: as for compile_dir() (default 0)
+    legacy: as for compile_dir() (default False)
+    optimize: as for compile_dir() (default -1)
+    invalidation_mode: as for compiler_dir()
+    """
+    success = True
+    for dir in sys.path:
+        if (not dir or dir == os.curdir) and skip_curdir:
+            if quiet < 2:
+                print('Skipping current directory')
+        else:
+            success = success and compile_dir(
+                dir,
+                maxlevels,
+                None,
+                force,
+                quiet=quiet,
+                legacy=legacy,
+                optimize=optimize,
+                invalidation_mode=invalidation_mode,
+            )
+    return success
+
+
+def main():
+    """Script main program."""
+    import argparse
+
+    parser = argparse.ArgumentParser(
+        description='Utilities to support installing Python libraries.')
+    parser.add_argument('-l', action='store_const', const=0,
+                        default=None, dest='maxlevels',
+                        help="don't recurse into subdirectories")
+    parser.add_argument('-r', type=int, dest='recursion',
+                        help=('control the maximum recursion level. '
+                              'if `-l` and `-r` options are specified, '
+                              'then `-r` takes precedence.'))
+    parser.add_argument('-f', action='store_true', dest='force',
+                        help='force rebuild even if timestamps are up to date')
+    parser.add_argument('-q', action='count', dest='quiet', default=0,
+                        help='output only error messages; -qq will suppress '
+                             'the error messages as well.')
+    parser.add_argument('-b', action='store_true', dest='legacy',
+                        help='use legacy (pre-PEP3147) compiled file locations')
+    parser.add_argument('-d', metavar='DESTDIR',  dest='ddir', default=None,
+                        help=('directory to prepend to file paths for use in '
+                              'compile-time tracebacks and in runtime '
+                              'tracebacks in cases where the source file is '
+                              'unavailable'))
+    parser.add_argument('-s', metavar='STRIPDIR',  dest='stripdir',
+                        default=None,
+                        help=('part of path to left-strip from path '
+                              'to source file - for example buildroot. '
+                              '`-d` and `-s` options cannot be '
+                              'specified together.'))
+    parser.add_argument('-p', metavar='PREPENDDIR',  dest='prependdir',
+                        default=None,
+                        help=('path to add as prefix to path '
+                              'to source file - for example / to make '
+                              'it absolute when some part is removed '
+                              'by `-s` option. '
+                              '`-d` and `-p` options cannot be '
+                              'specified together.'))
+    parser.add_argument('-x', metavar='REGEXP', dest='rx', default=None,
+                        help=('skip files matching the regular expression; '
+                              'the regexp is searched for in the full path '
+                              'of each file considered for compilation'))
+    parser.add_argument('-i', metavar='FILE', dest='flist',
+                        help=('add all the files and directories listed in '
+                              'FILE to the list considered for compilation; '
+                              'if "-", names are read from stdin'))
+    parser.add_argument('compile_dest', metavar='FILE|DIR', nargs='*',
+                        help=('zero or more file and directory names '
+                              'to compile; if no arguments given, defaults '
+                              'to the equivalent of -l sys.path'))
+    parser.add_argument('-j', '--workers', default=1,
+                        type=int, help='Run compileall concurrently')
+    invalidation_modes = [mode.name.lower().replace('_', '-')
+                          for mode in py_compile.PycInvalidationMode]
+    parser.add_argument('--invalidation-mode',
+                        choices=sorted(invalidation_modes),
+                        help=('set .pyc invalidation mode; defaults to '
+                              '"checked-hash" if the SOURCE_DATE_EPOCH '
+                              'environment variable is set, and '
+                              '"timestamp" otherwise.'))
+    parser.add_argument('-o', action='append', type=int, dest='opt_levels',
+                        help=('Optimization levels to run compilation with. '
+                              'Default is -1 which uses the optimization level '
+                              'of the Python interpreter itself (see -O).'))
+    parser.add_argument('-e', metavar='DIR', dest='limit_sl_dest',
+                        help='Ignore symlinks pointing outsite of the DIR')
+    parser.add_argument('--hardlink-dupes', action='store_true',
+                        dest='hardlink_dupes',
+                        help='Hardlink duplicated pyc files')
+
+    args = parser.parse_args()
+    compile_dests = args.compile_dest
+
+    if args.rx:
+        import re
+        args.rx = re.compile(args.rx)
+
+    if args.limit_sl_dest == "":
+        args.limit_sl_dest = None
+
+    if args.recursion is not None:
+        maxlevels = args.recursion
+    else:
+        maxlevels = args.maxlevels
+
+    if args.opt_levels is None:
+        args.opt_levels = [-1]
+
+    if len(args.opt_levels) == 1 and args.hardlink_dupes:
+        parser.error(("Hardlinking of duplicated bytecode makes sense "
+                      "only for more than one optimization level."))
+
+    if args.ddir is not None and (
+        args.stripdir is not None or args.prependdir is not None
+    ):
+        parser.error("-d cannot be used in combination with -s or -p")
+
+    # if flist is provided then load it
+    if args.flist:
+        try:
+            with (sys.stdin if args.flist=='-' else
+                    open(args.flist, encoding="utf-8")) as f:
+                for line in f:
+                    compile_dests.append(line.strip())
+        except OSError:
+            if args.quiet < 2:
+                print("Error reading file list {}".format(args.flist))
+            return False
+
+    if args.invalidation_mode:
+        ivl_mode = args.invalidation_mode.replace('-', '_').upper()
+        invalidation_mode = py_compile.PycInvalidationMode[ivl_mode]
+    else:
+        invalidation_mode = None
+
+    success = True
+    try:
+        if compile_dests:
+            for dest in compile_dests:
+                if os.path.isfile(dest):
+                    if not compile_file(dest, args.ddir, args.force, args.rx,
+                                        args.quiet, args.legacy,
+                                        invalidation_mode=invalidation_mode,
+                                        stripdir=args.stripdir,
+                                        prependdir=args.prependdir,
+                                        optimize=args.opt_levels,
+                                        limit_sl_dest=args.limit_sl_dest,
+                                        hardlink_dupes=args.hardlink_dupes):
+                        success = False
+                else:
+                    if not compile_dir(dest, maxlevels, args.ddir,
+                                       args.force, args.rx, args.quiet,
+                                       args.legacy, workers=args.workers,
+                                       invalidation_mode=invalidation_mode,
+                                       stripdir=args.stripdir,
+                                       prependdir=args.prependdir,
+                                       optimize=args.opt_levels,
+                                       limit_sl_dest=args.limit_sl_dest,
+                                       hardlink_dupes=args.hardlink_dupes):
+                        success = False
+            return success
+        else:
+            return compile_path(legacy=args.legacy, force=args.force,
+                                quiet=args.quiet,
+                                invalidation_mode=invalidation_mode)
+    except KeyboardInterrupt:
+        if args.quiet < 2:
+            print("\n[interrupted]")
+        return False
+    return True
+
+
+if __name__ == '__main__':
+    exit_status = int(not main())
+    sys.exit(exit_status)

evalkit_tf446/lib/python3.10/contextvars.py

@@ -0,0 +1,4 @@
+from _contextvars import Context, ContextVar, Token, copy_context
+
+
+__all__ = ('Context', 'ContextVar', 'Token', 'copy_context')

evalkit_tf446/lib/python3.10/copyreg.py

@@ -0,0 +1,219 @@
+"""Helper to provide extensibility for pickle.
+
+This is only useful to add pickle support for extension types defined in
+C, not for instances of user-defined classes.
+"""
+
+__all__ = ["pickle", "constructor",
+           "add_extension", "remove_extension", "clear_extension_cache"]
+
+dispatch_table = {}
+
+def pickle(ob_type, pickle_function, constructor_ob=None):
+    if not callable(pickle_function):
+        raise TypeError("reduction functions must be callable")
+    dispatch_table[ob_type] = pickle_function
+
+    # The constructor_ob function is a vestige of safe for unpickling.
+    # There is no reason for the caller to pass it anymore.
+    if constructor_ob is not None:
+        constructor(constructor_ob)
+
+def constructor(object):
+    if not callable(object):
+        raise TypeError("constructors must be callable")
+
+# Example: provide pickling support for complex numbers.
+
+try:
+    complex
+except NameError:
+    pass
+else:
+
+    def pickle_complex(c):
+        return complex, (c.real, c.imag)
+
+    pickle(complex, pickle_complex, complex)
+
+def pickle_union(obj):
+    import functools, operator
+    return functools.reduce, (operator.or_, obj.__args__)
+
+pickle(type(int | str), pickle_union)
+
+# Support for pickling new-style objects
+
+def _reconstructor(cls, base, state):
+    if base is object:
+        obj = object.__new__(cls)
+    else:
+        obj = base.__new__(cls, state)
+        if base.__init__ != object.__init__:
+            base.__init__(obj, state)
+    return obj
+
+_HEAPTYPE = 1<<9
+_new_type = type(int.__new__)
+
+# Python code for object.__reduce_ex__ for protocols 0 and 1
+
+def _reduce_ex(self, proto):
+    assert proto < 2
+    cls = self.__class__
+    for base in cls.__mro__:
+        if hasattr(base, '__flags__') and not base.__flags__ & _HEAPTYPE:
+            break
+        new = base.__new__
+        if isinstance(new, _new_type) and new.__self__ is base:
+            break
+    else:
+        base = object # not really reachable
+    if base is object:
+        state = None
+    else:
+        if base is cls:
+            raise TypeError(f"cannot pickle {cls.__name__!r} object")
+        state = base(self)
+    args = (cls, base, state)
+    try:
+        getstate = self.__getstate__
+    except AttributeError:
+        if getattr(self, "__slots__", None):
+            raise TypeError(f"cannot pickle {cls.__name__!r} object: "
+                            f"a class that defines __slots__ without "
+                            f"defining __getstate__ cannot be pickled "
+                            f"with protocol {proto}") from None
+        try:
+            dict = self.__dict__
+        except AttributeError:
+            dict = None
+    else:
+        dict = getstate()
+    if dict:
+        return _reconstructor, args, dict
+    else:
+        return _reconstructor, args
+
+# Helper for __reduce_ex__ protocol 2
+
+def __newobj__(cls, *args):
+    return cls.__new__(cls, *args)
+
+def __newobj_ex__(cls, args, kwargs):
+    """Used by pickle protocol 4, instead of __newobj__ to allow classes with
+    keyword-only arguments to be pickled correctly.
+    """
+    return cls.__new__(cls, *args, **kwargs)
+
+def _slotnames(cls):
+    """Return a list of slot names for a given class.
+
+    This needs to find slots defined by the class and its bases, so we
+    can't simply return the __slots__ attribute.  We must walk down
+    the Method Resolution Order and concatenate the __slots__ of each
+    class found there.  (This assumes classes don't modify their
+    __slots__ attribute to misrepresent their slots after the class is
+    defined.)
+    """
+
+    # Get the value from a cache in the class if possible
+    names = cls.__dict__.get("__slotnames__")
+    if names is not None:
+        return names
+
+    # Not cached -- calculate the value
+    names = []
+    if not hasattr(cls, "__slots__"):
+        # This class has no slots
+        pass
+    else:
+        # Slots found -- gather slot names from all base classes
+        for c in cls.__mro__:
+            if "__slots__" in c.__dict__:
+                slots = c.__dict__['__slots__']
+                # if class has a single slot, it can be given as a string
+                if isinstance(slots, str):
+                    slots = (slots,)
+                for name in slots:
+                    # special descriptors
+                    if name in ("__dict__", "__weakref__"):
+                        continue
+                    # mangled names
+                    elif name.startswith('__') and not name.endswith('__'):
+                        stripped = c.__name__.lstrip('_')
+                        if stripped:
+                            names.append('_%s%s' % (stripped, name))
+                        else:
+                            names.append(name)
+                    else:
+                        names.append(name)
+
+    # Cache the outcome in the class if at all possible
+    try:
+        cls.__slotnames__ = names
+    except:
+        pass # But don't die if we can't
+
+    return names
+
+# A registry of extension codes.  This is an ad-hoc compression
+# mechanism.  Whenever a global reference to <module>, <name> is about
+# to be pickled, the (<module>, <name>) tuple is looked up here to see
+# if it is a registered extension code for it.  Extension codes are
+# universal, so that the meaning of a pickle does not depend on
+# context.  (There are also some codes reserved for local use that
+# don't have this restriction.)  Codes are positive ints; 0 is
+# reserved.
+
+_extension_registry = {}                # key -> code
+_inverted_registry = {}                 # code -> key
+_extension_cache = {}                   # code -> object
+# Don't ever rebind those names:  pickling grabs a reference to them when
+# it's initialized, and won't see a rebinding.
+
+def add_extension(module, name, code):
+    """Register an extension code."""
+    code = int(code)
+    if not 1 <= code <= 0x7fffffff:
+        raise ValueError("code out of range")
+    key = (module, name)
+    if (_extension_registry.get(key) == code and
+        _inverted_registry.get(code) == key):
+        return # Redundant registrations are benign
+    if key in _extension_registry:
+        raise ValueError("key %s is already registered with code %s" %
+                         (key, _extension_registry[key]))
+    if code in _inverted_registry:
+        raise ValueError("code %s is already in use for key %s" %
+                         (code, _inverted_registry[code]))
+    _extension_registry[key] = code
+    _inverted_registry[code] = key
+
+def remove_extension(module, name, code):
+    """Unregister an extension code.  For testing only."""
+    key = (module, name)
+    if (_extension_registry.get(key) != code or
+        _inverted_registry.get(code) != key):
+        raise ValueError("key %s is not registered with code %s" %
+                         (key, code))
+    del _extension_registry[key]
+    del _inverted_registry[code]
+    if code in _extension_cache:
+        del _extension_cache[code]
+
+def clear_extension_cache():
+    _extension_cache.clear()
+
+# Standard extension code assignments
+
+# Reserved ranges
+
+# First  Last Count  Purpose
+#     1   127   127  Reserved for Python standard library
+#   128   191    64  Reserved for Zope
+#   192   239    48  Reserved for 3rd parties
+#   240   255    16  Reserved for private use (will never be assigned)
+#   256   Inf   Inf  Reserved for future assignment
+
+# Extension codes are assigned by the Python Software Foundation.

evalkit_tf446/lib/python3.10/decimal.py

@@ -0,0 +1,11 @@
+
+try:
+    from _decimal import *
+    from _decimal import __doc__
+    from _decimal import __version__
+    from _decimal import __libmpdec_version__
+except ImportError:
+    from _pydecimal import *
+    from _pydecimal import __doc__
+    from _pydecimal import __version__
+    from _pydecimal import __libmpdec_version__

evalkit_tf446/lib/python3.10/enum.py

@@ -0,0 +1,1053 @@
+import sys
+from types import MappingProxyType, DynamicClassAttribute
+
+
+__all__ = [
+        'EnumMeta',
+        'Enum', 'IntEnum', 'Flag', 'IntFlag',
+        'auto', 'unique',
+        ]
+
+
+def _is_descriptor(obj):
+    """
+    Returns True if obj is a descriptor, False otherwise.
+    """
+    return (
+            hasattr(obj, '__get__') or
+            hasattr(obj, '__set__') or
+            hasattr(obj, '__delete__')
+            )
+
+def _is_dunder(name):
+    """
+    Returns True if a __dunder__ name, False otherwise.
+    """
+    return (
+            len(name) > 4 and
+            name[:2] == name[-2:] == '__' and
+            name[2] != '_' and
+            name[-3] != '_'
+            )
+
+def _is_sunder(name):
+    """
+    Returns True if a _sunder_ name, False otherwise.
+    """
+    return (
+            len(name) > 2 and
+            name[0] == name[-1] == '_' and
+            name[1:2] != '_' and
+            name[-2:-1] != '_'
+            )
+
+def _is_private(cls_name, name):
+    # do not use `re` as `re` imports `enum`
+    pattern = '_%s__' % (cls_name, )
+    pat_len = len(pattern)
+    if (
+            len(name) > pat_len
+            and name.startswith(pattern)
+            and name[pat_len:pat_len+1] != ['_']
+            and (name[-1] != '_' or name[-2] != '_')
+        ):
+        return True
+    else:
+        return False
+
+def _make_class_unpicklable(cls):
+    """
+    Make the given class un-picklable.
+    """
+    def _break_on_call_reduce(self, proto):
+        raise TypeError('%r cannot be pickled' % self)
+    cls.__reduce_ex__ = _break_on_call_reduce
+    cls.__module__ = '<unknown>'
+
+_auto_null = object()
+class auto:
+    """
+    Instances are replaced with an appropriate value in Enum class suites.
+    """
+    value = _auto_null
+
+
+class _EnumDict(dict):
+    """
+    Track enum member order and ensure member names are not reused.
+
+    EnumMeta will use the names found in self._member_names as the
+    enumeration member names.
+    """
+    def __init__(self):
+        super().__init__()
+        self._member_names = []
+        self._last_values = []
+        self._ignore = []
+        self._auto_called = False
+
+    def __setitem__(self, key, value):
+        """
+        Changes anything not dundered or not a descriptor.
+
+        If an enum member name is used twice, an error is raised; duplicate
+        values are not checked for.
+
+        Single underscore (sunder) names are reserved.
+        """
+        if _is_private(self._cls_name, key):
+            import warnings
+            warnings.warn(
+                    "private variables, such as %r, will be normal attributes in 3.11"
+                        % (key, ),
+                    DeprecationWarning,
+                    stacklevel=2,
+                    )
+        if _is_sunder(key):
+            if key not in (
+                    '_order_', '_create_pseudo_member_',
+                    '_generate_next_value_', '_missing_', '_ignore_',
+                    ):
+                raise ValueError('_names_ are reserved for future Enum use')
+            if key == '_generate_next_value_':
+                # check if members already defined as auto()
+                if self._auto_called:
+                    raise TypeError("_generate_next_value_ must be defined before members")
+                setattr(self, '_generate_next_value', value)
+            elif key == '_ignore_':
+                if isinstance(value, str):
+                    value = value.replace(',',' ').split()
+                else:
+                    value = list(value)
+                self._ignore = value
+                already = set(value) & set(self._member_names)
+                if already:
+                    raise ValueError(
+                            '_ignore_ cannot specify already set names: %r'
+                            % (already, )
+                            )
+        elif _is_dunder(key):
+            if key == '__order__':
+                key = '_order_'
+        elif key in self._member_names:
+            # descriptor overwriting an enum?
+            raise TypeError('Attempted to reuse key: %r' % key)
+        elif key in self._ignore:
+            pass
+        elif not _is_descriptor(value):
+            if key in self:
+                # enum overwriting a descriptor?
+                raise TypeError('%r already defined as: %r' % (key, self[key]))
+            if isinstance(value, auto):
+                if value.value == _auto_null:
+                    value.value = self._generate_next_value(
+                            key,
+                            1,
+                            len(self._member_names),
+                            self._last_values[:],
+                            )
+                    self._auto_called = True
+                value = value.value
+            self._member_names.append(key)
+            self._last_values.append(value)
+        super().__setitem__(key, value)
+
+
+# Dummy value for Enum as EnumMeta explicitly checks for it, but of course
+# until EnumMeta finishes running the first time the Enum class doesn't exist.
+# This is also why there are checks in EnumMeta like `if Enum is not None`
+Enum = None
+
+class EnumMeta(type):
+    """
+    Metaclass for Enum
+    """
+    @classmethod
+    def __prepare__(metacls, cls, bases, **kwds):
+        # check that previous enum members do not exist
+        metacls._check_for_existing_members(cls, bases)
+        # create the namespace dict
+        enum_dict = _EnumDict()
+        enum_dict._cls_name = cls
+        # inherit previous flags and _generate_next_value_ function
+        member_type, first_enum = metacls._get_mixins_(cls, bases)
+        if first_enum is not None:
+            enum_dict['_generate_next_value_'] = getattr(
+                    first_enum, '_generate_next_value_', None,
+                    )
+        return enum_dict
+
+    def __new__(metacls, cls, bases, classdict, **kwds):
+        # an Enum class is final once enumeration items have been defined; it
+        # cannot be mixed with other types (int, float, etc.) if it has an
+        # inherited __new__ unless a new __new__ is defined (or the resulting
+        # class will fail).
+        #
+        # remove any keys listed in _ignore_
+        classdict.setdefault('_ignore_', []).append('_ignore_')
+        ignore = classdict['_ignore_']
+        for key in ignore:
+            classdict.pop(key, None)
+        member_type, first_enum = metacls._get_mixins_(cls, bases)
+        __new__, save_new, use_args = metacls._find_new_(
+                classdict, member_type, first_enum,
+                )
+
+        # save enum items into separate mapping so they don't get baked into
+        # the new class
+        enum_members = {k: classdict[k] for k in classdict._member_names}
+        for name in classdict._member_names:
+            del classdict[name]
+
+        # adjust the sunders
+        _order_ = classdict.pop('_order_', None)
+
+        # check for illegal enum names (any others?)
+        invalid_names = set(enum_members) & {'mro', ''}
+        if invalid_names:
+            raise ValueError('Invalid enum member name: {0}'.format(
+                ','.join(invalid_names)))
+
+        # create a default docstring if one has not been provided
+        if '__doc__' not in classdict:
+            classdict['__doc__'] = 'An enumeration.'
+
+        enum_class = super().__new__(metacls, cls, bases, classdict, **kwds)
+        enum_class._member_names_ = []               # names in definition order
+        enum_class._member_map_ = {}                 # name->value map
+        enum_class._member_type_ = member_type
+
+        # save DynamicClassAttribute attributes from super classes so we know
+        # if we can take the shortcut of storing members in the class dict
+        dynamic_attributes = {
+                k for c in enum_class.mro()
+                for k, v in c.__dict__.items()
+                if isinstance(v, DynamicClassAttribute)
+                }
+
+        # Reverse value->name map for hashable values.
+        enum_class._value2member_map_ = {}
+
+        # If a custom type is mixed into the Enum, and it does not know how
+        # to pickle itself, pickle.dumps will succeed but pickle.loads will
+        # fail.  Rather than have the error show up later and possibly far
+        # from the source, sabotage the pickle protocol for this class so
+        # that pickle.dumps also fails.
+        #
+        # However, if the new class implements its own __reduce_ex__, do not
+        # sabotage -- it's on them to make sure it works correctly.  We use
+        # __reduce_ex__ instead of any of the others as it is preferred by
+        # pickle over __reduce__, and it handles all pickle protocols.
+        if '__reduce_ex__' not in classdict:
+            if member_type is not object:
+                methods = ('__getnewargs_ex__', '__getnewargs__',
+                        '__reduce_ex__', '__reduce__')
+                if not any(m in member_type.__dict__ for m in methods):
+                    if '__new__' in classdict:
+                        # too late, sabotage
+                        _make_class_unpicklable(enum_class)
+                    else:
+                        # final attempt to verify that pickling would work:
+                        # travel mro until __new__ is found, checking for
+                        # __reduce__ and friends along the way -- if any of them
+                        # are found before/when __new__ is found, pickling should
+                        # work
+                        sabotage = None
+                        for chain in bases:
+                            for base in chain.__mro__:
+                                if base is object:
+                                    continue
+                                elif any(m in base.__dict__ for m in methods):
+                                    # found one, we're good
+                                    sabotage = False
+                                    break
+                                elif '__new__' in base.__dict__:
+                                    # not good
+                                    sabotage = True
+                                    break
+                            if sabotage is not None:
+                                break
+                        if sabotage:
+                            _make_class_unpicklable(enum_class)
+        # instantiate them, checking for duplicates as we go
+        # we instantiate first instead of checking for duplicates first in case
+        # a custom __new__ is doing something funky with the values -- such as
+        # auto-numbering ;)
+        for member_name in classdict._member_names:
+            value = enum_members[member_name]
+            if not isinstance(value, tuple):
+                args = (value, )
+            else:
+                args = value
+            if member_type is tuple:   # special case for tuple enums
+                args = (args, )     # wrap it one more time
+            if not use_args:
+                enum_member = __new__(enum_class)
+                if not hasattr(enum_member, '_value_'):
+                    enum_member._value_ = value
+            else:
+                enum_member = __new__(enum_class, *args)
+                if not hasattr(enum_member, '_value_'):
+                    if member_type is object:
+                        enum_member._value_ = value
+                    else:
+                        enum_member._value_ = member_type(*args)
+            value = enum_member._value_
+            enum_member._name_ = member_name
+            enum_member.__objclass__ = enum_class
+            enum_member.__init__(*args)
+            # If another member with the same value was already defined, the
+            # new member becomes an alias to the existing one.
+            for name, canonical_member in enum_class._member_map_.items():
+                if canonical_member._value_ == enum_member._value_:
+                    enum_member = canonical_member
+                    break
+            else:
+                # Aliases don't appear in member names (only in __members__).
+                enum_class._member_names_.append(member_name)
+            # performance boost for any member that would not shadow
+            # a DynamicClassAttribute
+            if member_name not in dynamic_attributes:
+                setattr(enum_class, member_name, enum_member)
+            # now add to _member_map_
+            enum_class._member_map_[member_name] = enum_member
+            try:
+                # This may fail if value is not hashable. We can't add the value
+                # to the map, and by-value lookups for this value will be
+                # linear.
+                enum_class._value2member_map_[value] = enum_member
+            except TypeError:
+                pass
+
+        # double check that repr and friends are not the mixin's or various
+        # things break (such as pickle)
+        # however, if the method is defined in the Enum itself, don't replace
+        # it
+        for name in ('__repr__', '__str__', '__format__', '__reduce_ex__'):
+            if name in classdict:
+                continue
+            class_method = getattr(enum_class, name)
+            obj_method = getattr(member_type, name, None)
+            enum_method = getattr(first_enum, name, None)
+            if obj_method is not None and obj_method is class_method:
+                setattr(enum_class, name, enum_method)
+
+        # replace any other __new__ with our own (as long as Enum is not None,
+        # anyway) -- again, this is to support pickle
+        if Enum is not None:
+            # if the user defined their own __new__, save it before it gets
+            # clobbered in case they subclass later
+            if save_new:
+                enum_class.__new_member__ = __new__
+            enum_class.__new__ = Enum.__new__
+
+        # py3 support for definition order (helps keep py2/py3 code in sync)
+        if _order_ is not None:
+            if isinstance(_order_, str):
+                _order_ = _order_.replace(',', ' ').split()
+            if _order_ != enum_class._member_names_:
+                raise TypeError('member order does not match _order_')
+
+        return enum_class
+
+    def __bool__(self):
+        """
+        classes/types should always be True.
+        """
+        return True
+
+    def __call__(cls, value, names=None, *, module=None, qualname=None, type=None, start=1):
+        """
+        Either returns an existing member, or creates a new enum class.
+
+        This method is used both when an enum class is given a value to match
+        to an enumeration member (i.e. Color(3)) and for the functional API
+        (i.e. Color = Enum('Color', names='RED GREEN BLUE')).
+
+        When used for the functional API:
+
+        `value` will be the name of the new class.
+
+        `names` should be either a string of white-space/comma delimited names
+        (values will start at `start`), or an iterator/mapping of name, value pairs.
+
+        `module` should be set to the module this class is being created in;
+        if it is not set, an attempt to find that module will be made, but if
+        it fails the class will not be picklable.
+
+        `qualname` should be set to the actual location this class can be found
+        at in its module; by default it is set to the global scope.  If this is
+        not correct, unpickling will fail in some circumstances.
+
+        `type`, if set, will be mixed in as the first base class.
+        """
+        if names is None:  # simple value lookup
+            return cls.__new__(cls, value)
+        # otherwise, functional API: we're creating a new Enum type
+        return cls._create_(
+                value,
+                names,
+                module=module,
+                qualname=qualname,
+                type=type,
+                start=start,
+                )
+
+    def __contains__(cls, obj):
+        if not isinstance(obj, Enum):
+            import warnings
+            warnings.warn(
+                    "in 3.12 __contains__ will no longer raise TypeError, but will return True if\n"
+                    "obj is a member or a member's value",
+                    DeprecationWarning,
+                    stacklevel=2,
+                    )
+            raise TypeError(
+                "unsupported operand type(s) for 'in': '%s' and '%s'" % (
+                    type(obj).__qualname__, cls.__class__.__qualname__))
+        return isinstance(obj, cls) and obj._name_ in cls._member_map_
+
+    def __delattr__(cls, attr):
+        # nicer error message when someone tries to delete an attribute
+        # (see issue19025).
+        if attr in cls._member_map_:
+            raise AttributeError("%s: cannot delete Enum member." % cls.__name__)
+        super().__delattr__(attr)
+
+    def __dir__(self):
+        return (
+                ['__class__', '__doc__', '__members__', '__module__']
+                + self._member_names_
+                )
+
+    def __getattr__(cls, name):
+        """
+        Return the enum member matching `name`
+
+        We use __getattr__ instead of descriptors or inserting into the enum
+        class' __dict__ in order to support `name` and `value` being both
+        properties for enum members (which live in the class' __dict__) and
+        enum members themselves.
+        """
+        if _is_dunder(name):
+            raise AttributeError(name)
+        try:
+            return cls._member_map_[name]
+        except KeyError:
+            raise AttributeError(name) from None
+
+    def __getitem__(cls, name):
+        return cls._member_map_[name]
+
+    def __iter__(cls):
+        """
+        Returns members in definition order.
+        """
+        return (cls._member_map_[name] for name in cls._member_names_)
+
+    def __len__(cls):
+        return len(cls._member_names_)
+
+    @property
+    def __members__(cls):
+        """
+        Returns a mapping of member name->value.
+
+        This mapping lists all enum members, including aliases. Note that this
+        is a read-only view of the internal mapping.
+        """
+        return MappingProxyType(cls._member_map_)
+
+    def __repr__(cls):
+        return "<enum %r>" % cls.__name__
+
+    def __reversed__(cls):
+        """
+        Returns members in reverse definition order.
+        """
+        return (cls._member_map_[name] for name in reversed(cls._member_names_))
+
+    def __setattr__(cls, name, value):
+        """
+        Block attempts to reassign Enum members.
+
+        A simple assignment to the class namespace only changes one of the
+        several possible ways to get an Enum member from the Enum class,
+        resulting in an inconsistent Enumeration.
+        """
+        member_map = cls.__dict__.get('_member_map_', {})
+        if name in member_map:
+            raise AttributeError('Cannot reassign members.')
+        super().__setattr__(name, value)
+
+    def _create_(cls, class_name, names, *, module=None, qualname=None, type=None, start=1):
+        """
+        Convenience method to create a new Enum class.
+
+        `names` can be:
+
+        * A string containing member names, separated either with spaces or
+          commas.  Values are incremented by 1 from `start`.
+        * An iterable of member names.  Values are incremented by 1 from `start`.
+        * An iterable of (member name, value) pairs.
+        * A mapping of member name -> value pairs.
+        """
+        metacls = cls.__class__
+        bases = (cls, ) if type is None else (type, cls)
+        _, first_enum = cls._get_mixins_(cls, bases)
+        classdict = metacls.__prepare__(class_name, bases)
+
+        # special processing needed for names?
+        if isinstance(names, str):
+            names = names.replace(',', ' ').split()
+        if isinstance(names, (tuple, list)) and names and isinstance(names[0], str):
+            original_names, names = names, []
+            last_values = []
+            for count, name in enumerate(original_names):
+                value = first_enum._generate_next_value_(name, start, count, last_values[:])
+                last_values.append(value)
+                names.append((name, value))
+
+        # Here, names is either an iterable of (name, value) or a mapping.
+        for item in names:
+            if isinstance(item, str):
+                member_name, member_value = item, names[item]
+            else:
+                member_name, member_value = item
+            classdict[member_name] = member_value
+        enum_class = metacls.__new__(metacls, class_name, bases, classdict)
+
+        # TODO: replace the frame hack if a blessed way to know the calling
+        # module is ever developed
+        if module is None:
+            try:
+                module = sys._getframe(2).f_globals['__name__']
+            except (AttributeError, ValueError, KeyError):
+                pass
+        if module is None:
+            _make_class_unpicklable(enum_class)
+        else:
+            enum_class.__module__ = module
+        if qualname is not None:
+            enum_class.__qualname__ = qualname
+
+        return enum_class
+
+    def _convert_(cls, name, module, filter, source=None):
+        """
+        Create a new Enum subclass that replaces a collection of global constants
+        """
+        # convert all constants from source (or module) that pass filter() to
+        # a new Enum called name, and export the enum and its members back to
+        # module;
+        # also, replace the __reduce_ex__ method so unpickling works in
+        # previous Python versions
+        module_globals = vars(sys.modules[module])
+        if source:
+            source = vars(source)
+        else:
+            source = module_globals
+        # _value2member_map_ is populated in the same order every time
+        # for a consistent reverse mapping of number to name when there
+        # are multiple names for the same number.
+        members = [
+                (name, value)
+                for name, value in source.items()
+                if filter(name)]
+        try:
+            # sort by value
+            members.sort(key=lambda t: (t[1], t[0]))
+        except TypeError:
+            # unless some values aren't comparable, in which case sort by name
+            members.sort(key=lambda t: t[0])
+        cls = cls(name, members, module=module)
+        cls.__reduce_ex__ = _reduce_ex_by_name
+        module_globals.update(cls.__members__)
+        module_globals[name] = cls
+        return cls
+
+    @staticmethod
+    def _check_for_existing_members(class_name, bases):
+        for chain in bases:
+            for base in chain.__mro__:
+                if issubclass(base, Enum) and base._member_names_:
+                    raise TypeError(
+                            "%s: cannot extend enumeration %r"
+                            % (class_name, base.__name__)
+                            )
+
+    @staticmethod
+    def _get_mixins_(class_name, bases):
+        """
+        Returns the type for creating enum members, and the first inherited
+        enum class.
+
+        bases: the tuple of bases that was given to __new__
+        """
+        if not bases:
+            return object, Enum
+
+        def _find_data_type(bases):
+            data_types = set()
+            for chain in bases:
+                candidate = None
+                for base in chain.__mro__:
+                    if base is object:
+                        continue
+                    elif issubclass(base, Enum):
+                        if base._member_type_ is not object:
+                            data_types.add(base._member_type_)
+                            break
+                    elif '__new__' in base.__dict__:
+                        if issubclass(base, Enum):
+                            continue
+                        data_types.add(candidate or base)
+                        break
+                    else:
+                        candidate = candidate or base
+            if len(data_types) > 1:
+                raise TypeError('%r: too many data types: %r' % (class_name, data_types))
+            elif data_types:
+                return data_types.pop()
+            else:
+                return None
+
+        # ensure final parent class is an Enum derivative, find any concrete
+        # data type, and check that Enum has no members
+        first_enum = bases[-1]
+        if not issubclass(first_enum, Enum):
+            raise TypeError("new enumerations should be created as "
+                    "`EnumName([mixin_type, ...] [data_type,] enum_type)`")
+        member_type = _find_data_type(bases) or object
+        if first_enum._member_names_:
+            raise TypeError("Cannot extend enumerations")
+        return member_type, first_enum
+
+    @staticmethod
+    def _find_new_(classdict, member_type, first_enum):
+        """
+        Returns the __new__ to be used for creating the enum members.
+
+        classdict: the class dictionary given to __new__
+        member_type: the data type whose __new__ will be used by default
+        first_enum: enumeration to check for an overriding __new__
+        """
+        # now find the correct __new__, checking to see of one was defined
+        # by the user; also check earlier enum classes in case a __new__ was
+        # saved as __new_member__
+        __new__ = classdict.get('__new__', None)
+
+        # should __new__ be saved as __new_member__ later?
+        save_new = __new__ is not None
+
+        if __new__ is None:
+            # check all possibles for __new_member__ before falling back to
+            # __new__
+            for method in ('__new_member__', '__new__'):
+                for possible in (member_type, first_enum):
+                    target = getattr(possible, method, None)
+                    if target not in {
+                            None,
+                            None.__new__,
+                            object.__new__,
+                            Enum.__new__,
+                            }:
+                        __new__ = target
+                        break
+                if __new__ is not None:
+                    break
+            else:
+                __new__ = object.__new__
+
+        # if a non-object.__new__ is used then whatever value/tuple was
+        # assigned to the enum member name will be passed to __new__ and to the
+        # new enum member's __init__
+        if __new__ is object.__new__:
+            use_args = False
+        else:
+            use_args = True
+        return __new__, save_new, use_args
+
+
+class Enum(metaclass=EnumMeta):
+    """
+    Generic enumeration.
+
+    Derive from this class to define new enumerations.
+    """
+    def __new__(cls, value):
+        # all enum instances are actually created during class construction
+        # without calling this method; this method is called by the metaclass'
+        # __call__ (i.e. Color(3) ), and by pickle
+        if type(value) is cls:
+            # For lookups like Color(Color.RED)
+            return value
+        # by-value search for a matching enum member
+        # see if it's in the reverse mapping (for hashable values)
+        try:
+            return cls._value2member_map_[value]
+        except KeyError:
+            # Not found, no need to do long O(n) search
+            pass
+        except TypeError:
+            # not there, now do long search -- O(n) behavior
+            for member in cls._member_map_.values():
+                if member._value_ == value:
+                    return member
+        # still not found -- try _missing_ hook
+        try:
+            exc = None
+            result = cls._missing_(value)
+        except Exception as e:
+            exc = e
+            result = None
+        try:
+            if isinstance(result, cls):
+                return result
+            else:
+                ve_exc = ValueError("%r is not a valid %s" % (value, cls.__qualname__))
+                if result is None and exc is None:
+                    raise ve_exc
+                elif exc is None:
+                    exc = TypeError(
+                            'error in %s._missing_: returned %r instead of None or a valid member'
+                            % (cls.__name__, result)
+                            )
+                if not isinstance(exc, ValueError):
+                    exc.__context__ = ve_exc
+                raise exc
+        finally:
+            # ensure all variables that could hold an exception are destroyed
+            exc = None
+            ve_exc = None
+
+    def _generate_next_value_(name, start, count, last_values):
+        """
+        Generate the next value when not given.
+
+        name: the name of the member
+        start: the initial start value or None
+        count: the number of existing members
+        last_value: the last value assigned or None
+        """
+        for last_value in reversed(last_values):
+            try:
+                return last_value + 1
+            except TypeError:
+                pass
+        else:
+            return start
+
+    @classmethod
+    def _missing_(cls, value):
+        return None
+
+    def __repr__(self):
+        return "<%s.%s: %r>" % (
+                self.__class__.__name__, self._name_, self._value_)
+
+    def __str__(self):
+        return "%s.%s" % (self.__class__.__name__, self._name_)
+
+    def __dir__(self):
+        """
+        Returns all members and all public methods
+        """
+        added_behavior = [
+                m
+                for cls in self.__class__.mro()
+                for m in cls.__dict__
+                if m[0] != '_' and m not in self._member_map_
+                ] + [m for m in self.__dict__ if m[0] != '_']
+        return (['__class__', '__doc__', '__module__'] + added_behavior)
+
+    def __format__(self, format_spec):
+        """
+        Returns format using actual value type unless __str__ has been overridden.
+        """
+        # mixed-in Enums should use the mixed-in type's __format__, otherwise
+        # we can get strange results with the Enum name showing up instead of
+        # the value
+
+        # pure Enum branch, or branch with __str__ explicitly overridden
+        str_overridden = type(self).__str__ not in (Enum.__str__, Flag.__str__)
+        if self._member_type_ is object or str_overridden:
+            cls = str
+            val = str(self)
+        # mix-in branch
+        else:
+            cls = self._member_type_
+            val = self._value_
+        return cls.__format__(val, format_spec)
+
+    def __hash__(self):
+        return hash(self._name_)
+
+    def __reduce_ex__(self, proto):
+        return self.__class__, (self._value_, )
+
+    # DynamicClassAttribute is used to provide access to the `name` and
+    # `value` properties of enum members while keeping some measure of
+    # protection from modification, while still allowing for an enumeration
+    # to have members named `name` and `value`.  This works because enumeration
+    # members are not set directly on the enum class -- __getattr__ is
+    # used to look them up.
+
+    @DynamicClassAttribute
+    def name(self):
+        """The name of the Enum member."""
+        return self._name_
+
+    @DynamicClassAttribute
+    def value(self):
+        """The value of the Enum member."""
+        return self._value_
+
+
+class IntEnum(int, Enum):
+    """Enum where members are also (and must be) ints"""
+
+
+def _reduce_ex_by_name(self, proto):
+    return self.name
+
+class Flag(Enum):
+    """
+    Support for flags
+    """
+
+    def _generate_next_value_(name, start, count, last_values):
+        """
+        Generate the next value when not given.
+
+        name: the name of the member
+        start: the initial start value or None
+        count: the number of existing members
+        last_value: the last value assigned or None
+        """
+        if not count:
+            return start if start is not None else 1
+        for last_value in reversed(last_values):
+            try:
+                high_bit = _high_bit(last_value)
+                break
+            except Exception:
+                raise TypeError('Invalid Flag value: %r' % last_value) from None
+        return 2 ** (high_bit+1)
+
+    @classmethod
+    def _missing_(cls, value):
+        """
+        Returns member (possibly creating it) if one can be found for value.
+        """
+        original_value = value
+        if value < 0:
+            value = ~value
+        possible_member = cls._create_pseudo_member_(value)
+        if original_value < 0:
+            possible_member = ~possible_member
+        return possible_member
+
+    @classmethod
+    def _create_pseudo_member_(cls, value):
+        """
+        Create a composite member iff value contains only members.
+        """
+        pseudo_member = cls._value2member_map_.get(value, None)
+        if pseudo_member is None:
+            # verify all bits are accounted for
+            _, extra_flags = _decompose(cls, value)
+            if extra_flags:
+                raise ValueError("%r is not a valid %s" % (value, cls.__qualname__))
+            # construct a singleton enum pseudo-member
+            pseudo_member = object.__new__(cls)
+            pseudo_member._name_ = None
+            pseudo_member._value_ = value
+            # use setdefault in case another thread already created a composite
+            # with this value
+            pseudo_member = cls._value2member_map_.setdefault(value, pseudo_member)
+        return pseudo_member
+
+    def __contains__(self, other):
+        """
+        Returns True if self has at least the same flags set as other.
+        """
+        if not isinstance(other, self.__class__):
+            raise TypeError(
+                "unsupported operand type(s) for 'in': '%s' and '%s'" % (
+                    type(other).__qualname__, self.__class__.__qualname__))
+        return other._value_ & self._value_ == other._value_
+
+    def __repr__(self):
+        cls = self.__class__
+        if self._name_ is not None:
+            return '<%s.%s: %r>' % (cls.__name__, self._name_, self._value_)
+        members, uncovered = _decompose(cls, self._value_)
+        return '<%s.%s: %r>' % (
+                cls.__name__,
+                '|'.join([str(m._name_ or m._value_) for m in members]),
+                self._value_,
+                )
+
+    def __str__(self):
+        cls = self.__class__
+        if self._name_ is not None:
+            return '%s.%s' % (cls.__name__, self._name_)
+        members, uncovered = _decompose(cls, self._value_)
+        if len(members) == 1 and members[0]._name_ is None:
+            return '%s.%r' % (cls.__name__, members[0]._value_)
+        else:
+            return '%s.%s' % (
+                    cls.__name__,
+                    '|'.join([str(m._name_ or m._value_) for m in members]),
+                    )
+
+    def __bool__(self):
+        return bool(self._value_)
+
+    def __or__(self, other):
+        if not isinstance(other, self.__class__):
+            return NotImplemented
+        return self.__class__(self._value_ | other._value_)
+
+    def __and__(self, other):
+        if not isinstance(other, self.__class__):
+            return NotImplemented
+        return self.__class__(self._value_ & other._value_)
+
+    def __xor__(self, other):
+        if not isinstance(other, self.__class__):
+            return NotImplemented
+        return self.__class__(self._value_ ^ other._value_)
+
+    def __invert__(self):
+        members, uncovered = _decompose(self.__class__, self._value_)
+        inverted = self.__class__(0)
+        for m in self.__class__:
+            if m not in members and not (m._value_ & self._value_):
+                inverted = inverted | m
+        return self.__class__(inverted)
+
+
+class IntFlag(int, Flag):
+    """
+    Support for integer-based Flags
+    """
+
+    @classmethod
+    def _missing_(cls, value):
+        """
+        Returns member (possibly creating it) if one can be found for value.
+        """
+        if not isinstance(value, int):
+            raise ValueError("%r is not a valid %s" % (value, cls.__qualname__))
+        new_member = cls._create_pseudo_member_(value)
+        return new_member
+
+    @classmethod
+    def _create_pseudo_member_(cls, value):
+        """
+        Create a composite member iff value contains only members.
+        """
+        pseudo_member = cls._value2member_map_.get(value, None)
+        if pseudo_member is None:
+            need_to_create = [value]
+            # get unaccounted for bits
+            _, extra_flags = _decompose(cls, value)
+            # timer = 10
+            while extra_flags:
+                # timer -= 1
+                bit = _high_bit(extra_flags)
+                flag_value = 2 ** bit
+                if (flag_value not in cls._value2member_map_ and
+                        flag_value not in need_to_create
+                        ):
+                    need_to_create.append(flag_value)
+                if extra_flags == -flag_value:
+                    extra_flags = 0
+                else:
+                    extra_flags ^= flag_value
+            for value in reversed(need_to_create):
+                # construct singleton pseudo-members
+                pseudo_member = int.__new__(cls, value)
+                pseudo_member._name_ = None
+                pseudo_member._value_ = value
+                # use setdefault in case another thread already created a composite
+                # with this value
+                pseudo_member = cls._value2member_map_.setdefault(value, pseudo_member)
+        return pseudo_member
+
+    def __or__(self, other):
+        if not isinstance(other, (self.__class__, int)):
+            return NotImplemented
+        result = self.__class__(self._value_ | self.__class__(other)._value_)
+        return result
+
+    def __and__(self, other):
+        if not isinstance(other, (self.__class__, int)):
+            return NotImplemented
+        return self.__class__(self._value_ & self.__class__(other)._value_)
+
+    def __xor__(self, other):
+        if not isinstance(other, (self.__class__, int)):
+            return NotImplemented
+        return self.__class__(self._value_ ^ self.__class__(other)._value_)
+
+    __ror__ = __or__
+    __rand__ = __and__
+    __rxor__ = __xor__
+
+    def __invert__(self):
+        result = self.__class__(~self._value_)
+        return result
+
+
+def _high_bit(value):
+    """
+    returns index of highest bit, or -1 if value is zero or negative
+    """
+    return value.bit_length() - 1
+
+def unique(enumeration):
+    """
+    Class decorator for enumerations ensuring unique member values.
+    """
+    duplicates = []
+    for name, member in enumeration.__members__.items():
+        if name != member.name:
+            duplicates.append((name, member.name))
+    if duplicates:
+        alias_details = ', '.join(
+                ["%s -> %s" % (alias, name) for (alias, name) in duplicates])
+        raise ValueError('duplicate values found in %r: %s' %
+                (enumeration, alias_details))
+    return enumeration
+
+def _decompose(flag, value):
+    """
+    Extract all members from the value.
+    """
+    # _decompose is only called if the value is not named
+    not_covered = value
+    negative = value < 0
+    members = []
+    for member in flag:
+        member_value = member.value
+        if member_value and member_value & value == member_value:
+            members.append(member)
+            not_covered &= ~member_value
+    if not negative:
+        tmp = not_covered
+        while tmp:
+            flag_value = 2 ** _high_bit(tmp)
+            if flag_value in flag._value2member_map_:
+                members.append(flag._value2member_map_[flag_value])
+                not_covered &= ~flag_value
+            tmp &= ~flag_value
+    if not members and value in flag._value2member_map_:
+        members.append(flag._value2member_map_[value])
+    members.sort(key=lambda m: m._value_, reverse=True)
+    if len(members) > 1 and members[0].value == value:
+        # we have the breakdown, don't need the value member itself
+        members.pop(0)
+    return members, not_covered

evalkit_tf446/lib/python3.10/fileinput.py

@@ -0,0 +1,462 @@
+"""Helper class to quickly write a loop over all standard input files.
+
+Typical use is:
+
+    import fileinput
+    for line in fileinput.input(encoding="utf-8"):
+        process(line)
+
+This iterates over the lines of all files listed in sys.argv[1:],
+defaulting to sys.stdin if the list is empty.  If a filename is '-' it
+is also replaced by sys.stdin and the optional arguments mode and
+openhook are ignored.  To specify an alternative list of filenames,
+pass it as the argument to input().  A single file name is also allowed.
+
+Functions filename(), lineno() return the filename and cumulative line
+number of the line that has just been read; filelineno() returns its
+line number in the current file; isfirstline() returns true iff the
+line just read is the first line of its file; isstdin() returns true
+iff the line was read from sys.stdin.  Function nextfile() closes the
+current file so that the next iteration will read the first line from
+the next file (if any); lines not read from the file will not count
+towards the cumulative line count; the filename is not changed until
+after the first line of the next file has been read.  Function close()
+closes the sequence.
+
+Before any lines have been read, filename() returns None and both line
+numbers are zero; nextfile() has no effect.  After all lines have been
+read, filename() and the line number functions return the values
+pertaining to the last line read; nextfile() has no effect.
+
+All files are opened in text mode by default, you can override this by
+setting the mode parameter to input() or FileInput.__init__().
+If an I/O error occurs during opening or reading a file, the OSError
+exception is raised.
+
+If sys.stdin is used more than once, the second and further use will
+return no lines, except perhaps for interactive use, or if it has been
+explicitly reset (e.g. using sys.stdin.seek(0)).
+
+Empty files are opened and immediately closed; the only time their
+presence in the list of filenames is noticeable at all is when the
+last file opened is empty.
+
+It is possible that the last line of a file doesn't end in a newline
+character; otherwise lines are returned including the trailing
+newline.
+
+Class FileInput is the implementation; its methods filename(),
+lineno(), fileline(), isfirstline(), isstdin(), nextfile() and close()
+correspond to the functions in the module.  In addition it has a
+readline() method which returns the next input line, and a
+__getitem__() method which implements the sequence behavior.  The
+sequence must be accessed in strictly sequential order; sequence
+access and readline() cannot be mixed.
+
+Optional in-place filtering: if the keyword argument inplace=1 is
+passed to input() or to the FileInput constructor, the file is moved
+to a backup file and standard output is directed to the input file.
+This makes it possible to write a filter that rewrites its input file
+in place.  If the keyword argument backup=".<some extension>" is also
+given, it specifies the extension for the backup file, and the backup
+file remains around; by default, the extension is ".bak" and it is
+deleted when the output file is closed.  In-place filtering is
+disabled when standard input is read.  XXX The current implementation
+does not work for MS-DOS 8+3 filesystems.
+"""
+
+import io
+import sys, os
+from types import GenericAlias
+
+__all__ = ["input", "close", "nextfile", "filename", "lineno", "filelineno",
+           "fileno", "isfirstline", "isstdin", "FileInput", "hook_compressed",
+           "hook_encoded"]
+
+_state = None
+
+def input(files=None, inplace=False, backup="", *, mode="r", openhook=None,
+          encoding=None, errors=None):
+    """Return an instance of the FileInput class, which can be iterated.
+
+    The parameters are passed to the constructor of the FileInput class.
+    The returned instance, in addition to being an iterator,
+    keeps global state for the functions of this module,.
+    """
+    global _state
+    if _state and _state._file:
+        raise RuntimeError("input() already active")
+    _state = FileInput(files, inplace, backup, mode=mode, openhook=openhook,
+                       encoding=encoding, errors=errors)
+    return _state
+
+def close():
+    """Close the sequence."""
+    global _state
+    state = _state
+    _state = None
+    if state:
+        state.close()
+
+def nextfile():
+    """
+    Close the current file so that the next iteration will read the first
+    line from the next file (if any); lines not read from the file will
+    not count towards the cumulative line count. The filename is not
+    changed until after the first line of the next file has been read.
+    Before the first line has been read, this function has no effect;
+    it cannot be used to skip the first file. After the last line of the
+    last file has been read, this function has no effect.
+    """
+    if not _state:
+        raise RuntimeError("no active input()")
+    return _state.nextfile()
+
+def filename():
+    """
+    Return the name of the file currently being read.
+    Before the first line has been read, returns None.
+    """
+    if not _state:
+        raise RuntimeError("no active input()")
+    return _state.filename()
+
+def lineno():
+    """
+    Return the cumulative line number of the line that has just been read.
+    Before the first line has been read, returns 0. After the last line
+    of the last file has been read, returns the line number of that line.
+    """
+    if not _state:
+        raise RuntimeError("no active input()")
+    return _state.lineno()
+
+def filelineno():
+    """
+    Return the line number in the current file. Before the first line
+    has been read, returns 0. After the last line of the last file has
+    been read, returns the line number of that line within the file.
+    """
+    if not _state:
+        raise RuntimeError("no active input()")
+    return _state.filelineno()
+
+def fileno():
+    """
+    Return the file number of the current file. When no file is currently
+    opened, returns -1.
+    """
+    if not _state:
+        raise RuntimeError("no active input()")
+    return _state.fileno()
+
+def isfirstline():
+    """
+    Returns true the line just read is the first line of its file,
+    otherwise returns false.
+    """
+    if not _state:
+        raise RuntimeError("no active input()")
+    return _state.isfirstline()
+
+def isstdin():
+    """
+    Returns true if the last line was read from sys.stdin,
+    otherwise returns false.
+    """
+    if not _state:
+        raise RuntimeError("no active input()")
+    return _state.isstdin()
+
+class FileInput:
+    """FileInput([files[, inplace[, backup]]], *, mode=None, openhook=None)
+
+    Class FileInput is the implementation of the module; its methods
+    filename(), lineno(), fileline(), isfirstline(), isstdin(), fileno(),
+    nextfile() and close() correspond to the functions of the same name
+    in the module.
+    In addition it has a readline() method which returns the next
+    input line, and a __getitem__() method which implements the
+    sequence behavior. The sequence must be accessed in strictly
+    sequential order; random access and readline() cannot be mixed.
+    """
+
+    def __init__(self, files=None, inplace=False, backup="", *,
+                 mode="r", openhook=None, encoding=None, errors=None):
+        if isinstance(files, str):
+            files = (files,)
+        elif isinstance(files, os.PathLike):
+            files = (os.fspath(files), )
+        else:
+            if files is None:
+                files = sys.argv[1:]
+            if not files:
+                files = ('-',)
+            else:
+                files = tuple(files)
+        self._files = files
+        self._inplace = inplace
+        self._backup = backup
+        self._savestdout = None
+        self._output = None
+        self._filename = None
+        self._startlineno = 0
+        self._filelineno = 0
+        self._file = None
+        self._isstdin = False
+        self._backupfilename = None
+        self._encoding = encoding
+        self._errors = errors
+
+        # We can not use io.text_encoding() here because old openhook doesn't
+        # take encoding parameter.
+        if (sys.flags.warn_default_encoding and
+                "b" not in mode and encoding is None and openhook is None):
+            import warnings
+            warnings.warn("'encoding' argument not specified.",
+                          EncodingWarning, 2)
+
+        # restrict mode argument to reading modes
+        if mode not in ('r', 'rU', 'U', 'rb'):
+            raise ValueError("FileInput opening mode must be one of "
+                             "'r', 'rU', 'U' and 'rb'")
+        if 'U' in mode:
+            import warnings
+            warnings.warn("'U' mode is deprecated",
+                          DeprecationWarning, 2)
+        self._mode = mode
+        self._write_mode = mode.replace('r', 'w') if 'U' not in mode else 'w'
+        if openhook:
+            if inplace:
+                raise ValueError("FileInput cannot use an opening hook in inplace mode")
+            if not callable(openhook):
+                raise ValueError("FileInput openhook must be callable")
+        self._openhook = openhook
+
+    def __del__(self):
+        self.close()
+
+    def close(self):
+        try:
+            self.nextfile()
+        finally:
+            self._files = ()
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type, value, traceback):
+        self.close()
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        while True:
+            line = self._readline()
+            if line:
+                self._filelineno += 1
+                return line
+            if not self._file:
+                raise StopIteration
+            self.nextfile()
+            # repeat with next file
+
+    def __getitem__(self, i):
+        import warnings
+        warnings.warn(
+            "Support for indexing FileInput objects is deprecated. "
+            "Use iterator protocol instead.",
+            DeprecationWarning,
+            stacklevel=2
+        )
+        if i != self.lineno():
+            raise RuntimeError("accessing lines out of order")
+        try:
+            return self.__next__()
+        except StopIteration:
+            raise IndexError("end of input reached")
+
+    def nextfile(self):
+        savestdout = self._savestdout
+        self._savestdout = None
+        if savestdout:
+            sys.stdout = savestdout
+
+        output = self._output
+        self._output = None
+        try:
+            if output:
+                output.close()
+        finally:
+            file = self._file
+            self._file = None
+            try:
+                del self._readline  # restore FileInput._readline
+            except AttributeError:
+                pass
+            try:
+                if file and not self._isstdin:
+                    file.close()
+            finally:
+                backupfilename = self._backupfilename
+                self._backupfilename = None
+                if backupfilename and not self._backup:
+                    try: os.unlink(backupfilename)
+                    except OSError: pass
+
+                self._isstdin = False
+
+    def readline(self):
+        while True:
+            line = self._readline()
+            if line:
+                self._filelineno += 1
+                return line
+            if not self._file:
+                return line
+            self.nextfile()
+            # repeat with next file
+
+    def _readline(self):
+        if not self._files:
+            if 'b' in self._mode:
+                return b''
+            else:
+                return ''
+        self._filename = self._files[0]
+        self._files = self._files[1:]
+        self._startlineno = self.lineno()
+        self._filelineno = 0
+        self._file = None
+        self._isstdin = False
+        self._backupfilename = 0
+
+        # EncodingWarning is emitted in __init__() already
+        if "b" not in self._mode:
+            encoding = self._encoding or "locale"
+        else:
+            encoding = None
+
+        if self._filename == '-':
+            self._filename = '<stdin>'
+            if 'b' in self._mode:
+                self._file = getattr(sys.stdin, 'buffer', sys.stdin)
+            else:
+                self._file = sys.stdin
+            self._isstdin = True
+        else:
+            if self._inplace:
+                self._backupfilename = (
+                    os.fspath(self._filename) + (self._backup or ".bak"))
+                try:
+                    os.unlink(self._backupfilename)
+                except OSError:
+                    pass
+                # The next few lines may raise OSError
+                os.rename(self._filename, self._backupfilename)
+                self._file = open(self._backupfilename, self._mode,
+                                  encoding=encoding, errors=self._errors)
+                try:
+                    perm = os.fstat(self._file.fileno()).st_mode
+                except OSError:
+                    self._output = open(self._filename, self._write_mode,
+                                        encoding=encoding, errors=self._errors)
+                else:
+                    mode = os.O_CREAT | os.O_WRONLY | os.O_TRUNC
+                    if hasattr(os, 'O_BINARY'):
+                        mode |= os.O_BINARY
+
+                    fd = os.open(self._filename, mode, perm)
+                    self._output = os.fdopen(fd, self._write_mode,
+                                             encoding=encoding, errors=self._errors)
+                    try:
+                        os.chmod(self._filename, perm)
+                    except OSError:
+                        pass
+                self._savestdout = sys.stdout
+                sys.stdout = self._output
+            else:
+                # This may raise OSError
+                if self._openhook:
+                    # Custom hooks made previous to Python 3.10 didn't have
+                    # encoding argument
+                    if self._encoding is None:
+                        self._file = self._openhook(self._filename, self._mode)
+                    else:
+                        self._file = self._openhook(
+                            self._filename, self._mode, encoding=self._encoding, errors=self._errors)
+                else:
+                    self._file = open(self._filename, self._mode, encoding=encoding, errors=self._errors)
+        self._readline = self._file.readline  # hide FileInput._readline
+        return self._readline()
+
+    def filename(self):
+        return self._filename
+
+    def lineno(self):
+        return self._startlineno + self._filelineno
+
+    def filelineno(self):
+        return self._filelineno
+
+    def fileno(self):
+        if self._file:
+            try:
+                return self._file.fileno()
+            except ValueError:
+                return -1
+        else:
+            return -1
+
+    def isfirstline(self):
+        return self._filelineno == 1
+
+    def isstdin(self):
+        return self._isstdin
+
+    __class_getitem__ = classmethod(GenericAlias)
+
+
+def hook_compressed(filename, mode, *, encoding=None, errors=None):
+    if encoding is None and "b" not in mode:  # EncodingWarning is emitted in FileInput() already.
+        encoding = "locale"
+    ext = os.path.splitext(filename)[1]
+    if ext == '.gz':
+        import gzip
+        stream = gzip.open(filename, mode)
+    elif ext == '.bz2':
+        import bz2
+        stream = bz2.BZ2File(filename, mode)
+    else:
+        return open(filename, mode, encoding=encoding, errors=errors)
+
+    # gzip and bz2 are binary mode by default.
+    if "b" not in mode:
+        stream = io.TextIOWrapper(stream, encoding=encoding, errors=errors)
+    return stream
+
+
+def hook_encoded(encoding, errors=None):
+    def openhook(filename, mode):
+        return open(filename, mode, encoding=encoding, errors=errors)
+    return openhook
+
+
+def _test():
+    import getopt
+    inplace = False
+    backup = False
+    opts, args = getopt.getopt(sys.argv[1:], "ib:")
+    for o, a in opts:
+        if o == '-i': inplace = True
+        if o == '-b': backup = a
+    for line in input(args, inplace=inplace, backup=backup):
+        if line[-1:] == '\n': line = line[:-1]
+        if line[-1:] == '\r': line = line[:-1]
+        print("%d: %s[%d]%s %s" % (lineno(), filename(), filelineno(),
+                                   isfirstline() and "*" or "", line))
+    print("%d: %s[%d]" % (lineno(), filename(), filelineno()))
+
+if __name__ == '__main__':
+    _test()

evalkit_tf446/lib/python3.10/fnmatch.py

@@ -0,0 +1,199 @@
+"""Filename matching with shell patterns.
+
+fnmatch(FILENAME, PATTERN) matches according to the local convention.
+fnmatchcase(FILENAME, PATTERN) always takes case in account.
+
+The functions operate by translating the pattern into a regular
+expression.  They cache the compiled regular expressions for speed.
+
+The function translate(PATTERN) returns a regular expression
+corresponding to PATTERN.  (It does not compile it.)
+"""
+import os
+import posixpath
+import re
+import functools
+
+__all__ = ["filter", "fnmatch", "fnmatchcase", "translate"]
+
+# Build a thread-safe incrementing counter to help create unique regexp group
+# names across calls.
+from itertools import count
+_nextgroupnum = count().__next__
+del count
+
+def fnmatch(name, pat):
+    """Test whether FILENAME matches PATTERN.
+
+    Patterns are Unix shell style:
+
+    *       matches everything
+    ?       matches any single character
+    [seq]   matches any character in seq
+    [!seq]  matches any char not in seq
+
+    An initial period in FILENAME is not special.
+    Both FILENAME and PATTERN are first case-normalized
+    if the operating system requires it.
+    If you don't want this, use fnmatchcase(FILENAME, PATTERN).
+    """
+    name = os.path.normcase(name)
+    pat = os.path.normcase(pat)
+    return fnmatchcase(name, pat)
+
+@functools.lru_cache(maxsize=256, typed=True)
+def _compile_pattern(pat):
+    if isinstance(pat, bytes):
+        pat_str = str(pat, 'ISO-8859-1')
+        res_str = translate(pat_str)
+        res = bytes(res_str, 'ISO-8859-1')
+    else:
+        res = translate(pat)
+    return re.compile(res).match
+
+def filter(names, pat):
+    """Construct a list from those elements of the iterable NAMES that match PAT."""
+    result = []
+    pat = os.path.normcase(pat)
+    match = _compile_pattern(pat)
+    if os.path is posixpath:
+        # normcase on posix is NOP. Optimize it away from the loop.
+        for name in names:
+            if match(name):
+                result.append(name)
+    else:
+        for name in names:
+            if match(os.path.normcase(name)):
+                result.append(name)
+    return result
+
+def fnmatchcase(name, pat):
+    """Test whether FILENAME matches PATTERN, including case.
+
+    This is a version of fnmatch() which doesn't case-normalize
+    its arguments.
+    """
+    match = _compile_pattern(pat)
+    return match(name) is not None
+
+
+def translate(pat):
+    """Translate a shell PATTERN to a regular expression.
+
+    There is no way to quote meta-characters.
+    """
+
+    STAR = object()
+    res = []
+    add = res.append
+    i, n = 0, len(pat)
+    while i < n:
+        c = pat[i]
+        i = i+1
+        if c == '*':
+            # compress consecutive `*` into one
+            if (not res) or res[-1] is not STAR:
+                add(STAR)
+        elif c == '?':
+            add('.')
+        elif c == '[':
+            j = i
+            if j < n and pat[j] == '!':
+                j = j+1
+            if j < n and pat[j] == ']':
+                j = j+1
+            while j < n and pat[j] != ']':
+                j = j+1
+            if j >= n:
+                add('\\[')
+            else:
+                stuff = pat[i:j]
+                if '-' not in stuff:
+                    stuff = stuff.replace('\\', r'\\')
+                else:
+                    chunks = []
+                    k = i+2 if pat[i] == '!' else i+1
+                    while True:
+                        k = pat.find('-', k, j)
+                        if k < 0:
+                            break
+                        chunks.append(pat[i:k])
+                        i = k+1
+                        k = k+3
+                    chunk = pat[i:j]
+                    if chunk:
+                        chunks.append(chunk)
+                    else:
+                        chunks[-1] += '-'
+                    # Remove empty ranges -- invalid in RE.
+                    for k in range(len(chunks)-1, 0, -1):
+                        if chunks[k-1][-1] > chunks[k][0]:
+                            chunks[k-1] = chunks[k-1][:-1] + chunks[k][1:]
+                            del chunks[k]
+                    # Escape backslashes and hyphens for set difference (--).
+                    # Hyphens that create ranges shouldn't be escaped.
+                    stuff = '-'.join(s.replace('\\', r'\\').replace('-', r'\-')
+                                     for s in chunks)
+                # Escape set operations (&&, ~~ and ||).
+                stuff = re.sub(r'([&~|])', r'\\\1', stuff)
+                i = j+1
+                if not stuff:
+                    # Empty range: never match.
+                    add('(?!)')
+                elif stuff == '!':
+                    # Negated empty range: match any character.
+                    add('.')
+                else:
+                    if stuff[0] == '!':
+                        stuff = '^' + stuff[1:]
+                    elif stuff[0] in ('^', '['):
+                        stuff = '\\' + stuff
+                    add(f'[{stuff}]')
+        else:
+            add(re.escape(c))
+    assert i == n
+
+    # Deal with STARs.
+    inp = res
+    res = []
+    add = res.append
+    i, n = 0, len(inp)
+    # Fixed pieces at the start?
+    while i < n and inp[i] is not STAR:
+        add(inp[i])
+        i += 1
+    # Now deal with STAR fixed STAR fixed ...
+    # For an interior `STAR fixed` pairing, we want to do a minimal
+    # .*? match followed by `fixed`, with no possibility of backtracking.
+    # We can't spell that directly, but can trick it into working by matching
+    #    .*?fixed
+    # in a lookahead assertion, save the matched part in a group, then
+    # consume that group via a backreference. If the overall match fails,
+    # the lookahead assertion won't try alternatives. So the translation is:
+    #     (?=(?P<name>.*?fixed))(?P=name)
+    # Group names are created as needed: g0, g1, g2, ...
+    # The numbers are obtained from _nextgroupnum() to ensure they're unique
+    # across calls and across threads. This is because people rely on the
+    # undocumented ability to join multiple translate() results together via
+    # "|" to build large regexps matching "one of many" shell patterns.
+    while i < n:
+        assert inp[i] is STAR
+        i += 1
+        if i == n:
+            add(".*")
+            break
+        assert inp[i] is not STAR
+        fixed = []
+        while i < n and inp[i] is not STAR:
+            fixed.append(inp[i])
+            i += 1
+        fixed = "".join(fixed)
+        if i == n:
+            add(".*")
+            add(fixed)
+        else:
+            groupnum = _nextgroupnum()
+            add(f"(?=(?P<g{groupnum}>.*?{fixed}))(?P=g{groupnum})")
+    assert i == n
+    res = "".join(res)
+    return fr'(?s:{res})\Z'

evalkit_tf446/lib/python3.10/fractions.py

@@ -0,0 +1,748 @@
+# Originally contributed by Sjoerd Mullender.
+# Significantly modified by Jeffrey Yasskin <jyasskin at gmail.com>.
+
+"""Fraction, infinite-precision, real numbers."""
+
+from decimal import Decimal
+import math
+import numbers
+import operator
+import re
+import sys
+
+__all__ = ['Fraction']
+
+
+# Constants related to the hash implementation;  hash(x) is based
+# on the reduction of x modulo the prime _PyHASH_MODULUS.
+_PyHASH_MODULUS = sys.hash_info.modulus
+# Value to be used for rationals that reduce to infinity modulo
+# _PyHASH_MODULUS.
+_PyHASH_INF = sys.hash_info.inf
+
+_RATIONAL_FORMAT = re.compile(r"""
+    \A\s*                      # optional whitespace at the start, then
+    (?P<sign>[-+]?)            # an optional sign, then
+    (?=\d|\.\d)                # lookahead for digit or .digit
+    (?P<num>\d*)               # numerator (possibly empty)
+    (?:                        # followed by
+       (?:/(?P<denom>\d+))?    # an optional denominator
+    |                          # or
+       (?:\.(?P<decimal>\d*))? # an optional fractional part
+       (?:E(?P<exp>[-+]?\d+))? # and optional exponent
+    )
+    \s*\Z                      # and optional whitespace to finish
+""", re.VERBOSE | re.IGNORECASE)
+
+
+class Fraction(numbers.Rational):
+    """This class implements rational numbers.
+
+    In the two-argument form of the constructor, Fraction(8, 6) will
+    produce a rational number equivalent to 4/3. Both arguments must
+    be Rational. The numerator defaults to 0 and the denominator
+    defaults to 1 so that Fraction(3) == 3 and Fraction() == 0.
+
+    Fractions can also be constructed from:
+
+      - numeric strings similar to those accepted by the
+        float constructor (for example, '-2.3' or '1e10')
+
+      - strings of the form '123/456'
+
+      - float and Decimal instances
+
+      - other Rational instances (including integers)
+
+    """
+
+    __slots__ = ('_numerator', '_denominator')
+
+    # We're immutable, so use __new__ not __init__
+    def __new__(cls, numerator=0, denominator=None, *, _normalize=True):
+        """Constructs a Rational.
+
+        Takes a string like '3/2' or '1.5', another Rational instance, a
+        numerator/denominator pair, or a float.
+
+        Examples
+        --------
+
+        >>> Fraction(10, -8)
+        Fraction(-5, 4)
+        >>> Fraction(Fraction(1, 7), 5)
+        Fraction(1, 35)
+        >>> Fraction(Fraction(1, 7), Fraction(2, 3))
+        Fraction(3, 14)
+        >>> Fraction('314')
+        Fraction(314, 1)
+        >>> Fraction('-35/4')
+        Fraction(-35, 4)
+        >>> Fraction('3.1415') # conversion from numeric string
+        Fraction(6283, 2000)
+        >>> Fraction('-47e-2') # string may include a decimal exponent
+        Fraction(-47, 100)
+        >>> Fraction(1.47)  # direct construction from float (exact conversion)
+        Fraction(6620291452234629, 4503599627370496)
+        >>> Fraction(2.25)
+        Fraction(9, 4)
+        >>> Fraction(Decimal('1.47'))
+        Fraction(147, 100)
+
+        """
+        self = super(Fraction, cls).__new__(cls)
+
+        if denominator is None:
+            if type(numerator) is int:
+                self._numerator = numerator
+                self._denominator = 1
+                return self
+
+            elif isinstance(numerator, numbers.Rational):
+                self._numerator = numerator.numerator
+                self._denominator = numerator.denominator
+                return self
+
+            elif isinstance(numerator, (float, Decimal)):
+                # Exact conversion
+                self._numerator, self._denominator = numerator.as_integer_ratio()
+                return self
+
+            elif isinstance(numerator, str):
+                # Handle construction from strings.
+                m = _RATIONAL_FORMAT.match(numerator)
+                if m is None:
+                    raise ValueError('Invalid literal for Fraction: %r' %
+                                     numerator)
+                numerator = int(m.group('num') or '0')
+                denom = m.group('denom')
+                if denom:
+                    denominator = int(denom)
+                else:
+                    denominator = 1
+                    decimal = m.group('decimal')
+                    if decimal:
+                        scale = 10**len(decimal)
+                        numerator = numerator * scale + int(decimal)
+                        denominator *= scale
+                    exp = m.group('exp')
+                    if exp:
+                        exp = int(exp)
+                        if exp >= 0:
+                            numerator *= 10**exp
+                        else:
+                            denominator *= 10**-exp
+                if m.group('sign') == '-':
+                    numerator = -numerator
+
+            else:
+                raise TypeError("argument should be a string "
+                                "or a Rational instance")
+
+        elif type(numerator) is int is type(denominator):
+            pass # *very* normal case
+
+        elif (isinstance(numerator, numbers.Rational) and
+            isinstance(denominator, numbers.Rational)):
+            numerator, denominator = (
+                numerator.numerator * denominator.denominator,
+                denominator.numerator * numerator.denominator
+                )
+        else:
+            raise TypeError("both arguments should be "
+                            "Rational instances")
+
+        if denominator == 0:
+            raise ZeroDivisionError('Fraction(%s, 0)' % numerator)
+        if _normalize:
+            g = math.gcd(numerator, denominator)
+            if denominator < 0:
+                g = -g
+            numerator //= g
+            denominator //= g
+        self._numerator = numerator
+        self._denominator = denominator
+        return self
+
+    @classmethod
+    def from_float(cls, f):
+        """Converts a finite float to a rational number, exactly.
+
+        Beware that Fraction.from_float(0.3) != Fraction(3, 10).
+
+        """
+        if isinstance(f, numbers.Integral):
+            return cls(f)
+        elif not isinstance(f, float):
+            raise TypeError("%s.from_float() only takes floats, not %r (%s)" %
+                            (cls.__name__, f, type(f).__name__))
+        return cls(*f.as_integer_ratio())
+
+    @classmethod
+    def from_decimal(cls, dec):
+        """Converts a finite Decimal instance to a rational number, exactly."""
+        from decimal import Decimal
+        if isinstance(dec, numbers.Integral):
+            dec = Decimal(int(dec))
+        elif not isinstance(dec, Decimal):
+            raise TypeError(
+                "%s.from_decimal() only takes Decimals, not %r (%s)" %
+                (cls.__name__, dec, type(dec).__name__))
+        return cls(*dec.as_integer_ratio())
+
+    def as_integer_ratio(self):
+        """Return the integer ratio as a tuple.
+
+        Return a tuple of two integers, whose ratio is equal to the
+        Fraction and with a positive denominator.
+        """
+        return (self._numerator, self._denominator)
+
+    def limit_denominator(self, max_denominator=1000000):
+        """Closest Fraction to self with denominator at most max_denominator.
+
+        >>> Fraction('3.141592653589793').limit_denominator(10)
+        Fraction(22, 7)
+        >>> Fraction('3.141592653589793').limit_denominator(100)
+        Fraction(311, 99)
+        >>> Fraction(4321, 8765).limit_denominator(10000)
+        Fraction(4321, 8765)
+
+        """
+        # Algorithm notes: For any real number x, define a *best upper
+        # approximation* to x to be a rational number p/q such that:
+        #
+        #   (1) p/q >= x, and
+        #   (2) if p/q > r/s >= x then s > q, for any rational r/s.
+        #
+        # Define *best lower approximation* similarly.  Then it can be
+        # proved that a rational number is a best upper or lower
+        # approximation to x if, and only if, it is a convergent or
+        # semiconvergent of the (unique shortest) continued fraction
+        # associated to x.
+        #
+        # To find a best rational approximation with denominator <= M,
+        # we find the best upper and lower approximations with
+        # denominator <= M and take whichever of these is closer to x.
+        # In the event of a tie, the bound with smaller denominator is
+        # chosen.  If both denominators are equal (which can happen
+        # only when max_denominator == 1 and self is midway between
+        # two integers) the lower bound---i.e., the floor of self, is
+        # taken.
+
+        if max_denominator < 1:
+            raise ValueError("max_denominator should be at least 1")
+        if self._denominator <= max_denominator:
+            return Fraction(self)
+
+        p0, q0, p1, q1 = 0, 1, 1, 0
+        n, d = self._numerator, self._denominator
+        while True:
+            a = n//d
+            q2 = q0+a*q1
+            if q2 > max_denominator:
+                break
+            p0, q0, p1, q1 = p1, q1, p0+a*p1, q2
+            n, d = d, n-a*d
+
+        k = (max_denominator-q0)//q1
+        bound1 = Fraction(p0+k*p1, q0+k*q1)
+        bound2 = Fraction(p1, q1)
+        if abs(bound2 - self) <= abs(bound1-self):
+            return bound2
+        else:
+            return bound1
+
+    @property
+    def numerator(a):
+        return a._numerator
+
+    @property
+    def denominator(a):
+        return a._denominator
+
+    def __repr__(self):
+        """repr(self)"""
+        return '%s(%s, %s)' % (self.__class__.__name__,
+                               self._numerator, self._denominator)
+
+    def __str__(self):
+        """str(self)"""
+        if self._denominator == 1:
+            return str(self._numerator)
+        else:
+            return '%s/%s' % (self._numerator, self._denominator)
+
+    def _operator_fallbacks(monomorphic_operator, fallback_operator):
+        """Generates forward and reverse operators given a purely-rational
+        operator and a function from the operator module.
+
+        Use this like:
+        __op__, __rop__ = _operator_fallbacks(just_rational_op, operator.op)
+
+        In general, we want to implement the arithmetic operations so
+        that mixed-mode operations either call an implementation whose
+        author knew about the types of both arguments, or convert both
+        to the nearest built in type and do the operation there. In
+        Fraction, that means that we define __add__ and __radd__ as:
+
+            def __add__(self, other):
+                # Both types have numerators/denominator attributes,
+                # so do the operation directly
+                if isinstance(other, (int, Fraction)):
+                    return Fraction(self.numerator * other.denominator +
+                                    other.numerator * self.denominator,
+                                    self.denominator * other.denominator)
+                # float and complex don't have those operations, but we
+                # know about those types, so special case them.
+                elif isinstance(other, float):
+                    return float(self) + other
+                elif isinstance(other, complex):
+                    return complex(self) + other
+                # Let the other type take over.
+                return NotImplemented
+
+            def __radd__(self, other):
+                # radd handles more types than add because there's
+                # nothing left to fall back to.
+                if isinstance(other, numbers.Rational):
+                    return Fraction(self.numerator * other.denominator +
+                                    other.numerator * self.denominator,
+                                    self.denominator * other.denominator)
+                elif isinstance(other, Real):
+                    return float(other) + float(self)
+                elif isinstance(other, Complex):
+                    return complex(other) + complex(self)
+                return NotImplemented
+
+
+        There are 5 different cases for a mixed-type addition on
+        Fraction. I'll refer to all of the above code that doesn't
+        refer to Fraction, float, or complex as "boilerplate". 'r'
+        will be an instance of Fraction, which is a subtype of
+        Rational (r : Fraction <: Rational), and b : B <:
+        Complex. The first three involve 'r + b':
+
+            1. If B <: Fraction, int, float, or complex, we handle
+               that specially, and all is well.
+            2. If Fraction falls back to the boilerplate code, and it
+               were to return a value from __add__, we'd miss the
+               possibility that B defines a more intelligent __radd__,
+               so the boilerplate should return NotImplemented from
+               __add__. In particular, we don't handle Rational
+               here, even though we could get an exact answer, in case
+               the other type wants to do something special.
+            3. If B <: Fraction, Python tries B.__radd__ before
+               Fraction.__add__. This is ok, because it was
+               implemented with knowledge of Fraction, so it can
+               handle those instances before delegating to Real or
+               Complex.
+
+        The next two situations describe 'b + r'. We assume that b
+        didn't know about Fraction in its implementation, and that it
+        uses similar boilerplate code:
+
+            4. If B <: Rational, then __radd_ converts both to the
+               builtin rational type (hey look, that's us) and
+               proceeds.
+            5. Otherwise, __radd__ tries to find the nearest common
+               base ABC, and fall back to its builtin type. Since this
+               class doesn't subclass a concrete type, there's no
+               implementation to fall back to, so we need to try as
+               hard as possible to return an actual value, or the user
+               will get a TypeError.
+
+        """
+        def forward(a, b):
+            if isinstance(b, (int, Fraction)):
+                return monomorphic_operator(a, b)
+            elif isinstance(b, float):
+                return fallback_operator(float(a), b)
+            elif isinstance(b, complex):
+                return fallback_operator(complex(a), b)
+            else:
+                return NotImplemented
+        forward.__name__ = '__' + fallback_operator.__name__ + '__'
+        forward.__doc__ = monomorphic_operator.__doc__
+
+        def reverse(b, a):
+            if isinstance(a, numbers.Rational):
+                # Includes ints.
+                return monomorphic_operator(a, b)
+            elif isinstance(a, numbers.Real):
+                return fallback_operator(float(a), float(b))
+            elif isinstance(a, numbers.Complex):
+                return fallback_operator(complex(a), complex(b))
+            else:
+                return NotImplemented
+        reverse.__name__ = '__r' + fallback_operator.__name__ + '__'
+        reverse.__doc__ = monomorphic_operator.__doc__
+
+        return forward, reverse
+
+    # Rational arithmetic algorithms: Knuth, TAOCP, Volume 2, 4.5.1.
+    #
+    # Assume input fractions a and b are normalized.
+    #
+    # 1) Consider addition/subtraction.
+    #
+    # Let g = gcd(da, db). Then
+    #
+    #              na   nb    na*db ± nb*da
+    #     a ± b == -- ± -- == ------------- ==
+    #              da   db        da*db
+    #
+    #              na*(db//g) ± nb*(da//g)    t
+    #           == ----------------------- == -
+    #                      (da*db)//g         d
+    #
+    # Now, if g > 1, we're working with smaller integers.
+    #
+    # Note, that t, (da//g) and (db//g) are pairwise coprime.
+    #
+    # Indeed, (da//g) and (db//g) share no common factors (they were
+    # removed) and da is coprime with na (since input fractions are
+    # normalized), hence (da//g) and na are coprime.  By symmetry,
+    # (db//g) and nb are coprime too.  Then,
+    #
+    #     gcd(t, da//g) == gcd(na*(db//g), da//g) == 1
+    #     gcd(t, db//g) == gcd(nb*(da//g), db//g) == 1
+    #
+    # Above allows us optimize reduction of the result to lowest
+    # terms.  Indeed,
+    #
+    #     g2 = gcd(t, d) == gcd(t, (da//g)*(db//g)*g) == gcd(t, g)
+    #
+    #                       t//g2                   t//g2
+    #     a ± b == ----------------------- == ----------------
+    #              (da//g)*(db//g)*(g//g2)    (da//g)*(db//g2)
+    #
+    # is a normalized fraction.  This is useful because the unnormalized
+    # denominator d could be much larger than g.
+    #
+    # We should special-case g == 1 (and g2 == 1), since 60.8% of
+    # randomly-chosen integers are coprime:
+    # https://en.wikipedia.org/wiki/Coprime_integers#Probability_of_coprimality
+    # Note, that g2 == 1 always for fractions, obtained from floats: here
+    # g is a power of 2 and the unnormalized numerator t is an odd integer.
+    #
+    # 2) Consider multiplication
+    #
+    # Let g1 = gcd(na, db) and g2 = gcd(nb, da), then
+    #
+    #            na*nb    na*nb    (na//g1)*(nb//g2)
+    #     a*b == ----- == ----- == -----------------
+    #            da*db    db*da    (db//g1)*(da//g2)
+    #
+    # Note, that after divisions we're multiplying smaller integers.
+    #
+    # Also, the resulting fraction is normalized, because each of
+    # two factors in the numerator is coprime to each of the two factors
+    # in the denominator.
+    #
+    # Indeed, pick (na//g1).  It's coprime with (da//g2), because input
+    # fractions are normalized.  It's also coprime with (db//g1), because
+    # common factors are removed by g1 == gcd(na, db).
+    #
+    # As for addition/subtraction, we should special-case g1 == 1
+    # and g2 == 1 for same reason.  That happens also for multiplying
+    # rationals, obtained from floats.
+
+    def _add(a, b):
+        """a + b"""
+        na, da = a.numerator, a.denominator
+        nb, db = b.numerator, b.denominator
+        g = math.gcd(da, db)
+        if g == 1:
+            return Fraction(na * db + da * nb, da * db, _normalize=False)
+        s = da // g
+        t = na * (db // g) + nb * s
+        g2 = math.gcd(t, g)
+        if g2 == 1:
+            return Fraction(t, s * db, _normalize=False)
+        return Fraction(t // g2, s * (db // g2), _normalize=False)
+
+    __add__, __radd__ = _operator_fallbacks(_add, operator.add)
+
+    def _sub(a, b):
+        """a - b"""
+        na, da = a.numerator, a.denominator
+        nb, db = b.numerator, b.denominator
+        g = math.gcd(da, db)
+        if g == 1:
+            return Fraction(na * db - da * nb, da * db, _normalize=False)
+        s = da // g
+        t = na * (db // g) - nb * s
+        g2 = math.gcd(t, g)
+        if g2 == 1:
+            return Fraction(t, s * db, _normalize=False)
+        return Fraction(t // g2, s * (db // g2), _normalize=False)
+
+    __sub__, __rsub__ = _operator_fallbacks(_sub, operator.sub)
+
+    def _mul(a, b):
+        """a * b"""
+        na, da = a.numerator, a.denominator
+        nb, db = b.numerator, b.denominator
+        g1 = math.gcd(na, db)
+        if g1 > 1:
+            na //= g1
+            db //= g1
+        g2 = math.gcd(nb, da)
+        if g2 > 1:
+            nb //= g2
+            da //= g2
+        return Fraction(na * nb, db * da, _normalize=False)
+
+    __mul__, __rmul__ = _operator_fallbacks(_mul, operator.mul)
+
+    def _div(a, b):
+        """a / b"""
+        # Same as _mul(), with inversed b.
+        na, da = a.numerator, a.denominator
+        nb, db = b.numerator, b.denominator
+        g1 = math.gcd(na, nb)
+        if g1 > 1:
+            na //= g1
+            nb //= g1
+        g2 = math.gcd(db, da)
+        if g2 > 1:
+            da //= g2
+            db //= g2
+        n, d = na * db, nb * da
+        if d < 0:
+            n, d = -n, -d
+        return Fraction(n, d, _normalize=False)
+
+    __truediv__, __rtruediv__ = _operator_fallbacks(_div, operator.truediv)
+
+    def _floordiv(a, b):
+        """a // b"""
+        return (a.numerator * b.denominator) // (a.denominator * b.numerator)
+
+    __floordiv__, __rfloordiv__ = _operator_fallbacks(_floordiv, operator.floordiv)
+
+    def _divmod(a, b):
+        """(a // b, a % b)"""
+        da, db = a.denominator, b.denominator
+        div, n_mod = divmod(a.numerator * db, da * b.numerator)
+        return div, Fraction(n_mod, da * db)
+
+    __divmod__, __rdivmod__ = _operator_fallbacks(_divmod, divmod)
+
+    def _mod(a, b):
+        """a % b"""
+        da, db = a.denominator, b.denominator
+        return Fraction((a.numerator * db) % (b.numerator * da), da * db)
+
+    __mod__, __rmod__ = _operator_fallbacks(_mod, operator.mod)
+
+    def __pow__(a, b):
+        """a ** b
+
+        If b is not an integer, the result will be a float or complex
+        since roots are generally irrational. If b is an integer, the
+        result will be rational.
+
+        """
+        if isinstance(b, numbers.Rational):
+            if b.denominator == 1:
+                power = b.numerator
+                if power >= 0:
+                    return Fraction(a._numerator ** power,
+                                    a._denominator ** power,
+                                    _normalize=False)
+                elif a._numerator >= 0:
+                    return Fraction(a._denominator ** -power,
+                                    a._numerator ** -power,
+                                    _normalize=False)
+                else:
+                    return Fraction((-a._denominator) ** -power,
+                                    (-a._numerator) ** -power,
+                                    _normalize=False)
+            else:
+                # A fractional power will generally produce an
+                # irrational number.
+                return float(a) ** float(b)
+        else:
+            return float(a) ** b
+
+    def __rpow__(b, a):
+        """a ** b"""
+        if b._denominator == 1 and b._numerator >= 0:
+            # If a is an int, keep it that way if possible.
+            return a ** b._numerator
+
+        if isinstance(a, numbers.Rational):
+            return Fraction(a.numerator, a.denominator) ** b
+
+        if b._denominator == 1:
+            return a ** b._numerator
+
+        return a ** float(b)
+
+    def __pos__(a):
+        """+a: Coerces a subclass instance to Fraction"""
+        return Fraction(a._numerator, a._denominator, _normalize=False)
+
+    def __neg__(a):
+        """-a"""
+        return Fraction(-a._numerator, a._denominator, _normalize=False)
+
+    def __abs__(a):
+        """abs(a)"""
+        return Fraction(abs(a._numerator), a._denominator, _normalize=False)
+
+    def __trunc__(a):
+        """trunc(a)"""
+        if a._numerator < 0:
+            return -(-a._numerator // a._denominator)
+        else:
+            return a._numerator // a._denominator
+
+    def __floor__(a):
+        """math.floor(a)"""
+        return a.numerator // a.denominator
+
+    def __ceil__(a):
+        """math.ceil(a)"""
+        # The negations cleverly convince floordiv to return the ceiling.
+        return -(-a.numerator // a.denominator)
+
+    def __round__(self, ndigits=None):
+        """round(self, ndigits)
+
+        Rounds half toward even.
+        """
+        if ndigits is None:
+            floor, remainder = divmod(self.numerator, self.denominator)
+            if remainder * 2 < self.denominator:
+                return floor
+            elif remainder * 2 > self.denominator:
+                return floor + 1
+            # Deal with the half case:
+            elif floor % 2 == 0:
+                return floor
+            else:
+                return floor + 1
+        shift = 10**abs(ndigits)
+        # See _operator_fallbacks.forward to check that the results of
+        # these operations will always be Fraction and therefore have
+        # round().
+        if ndigits > 0:
+            return Fraction(round(self * shift), shift)
+        else:
+            return Fraction(round(self / shift) * shift)
+
+    def __hash__(self):
+        """hash(self)"""
+
+        # To make sure that the hash of a Fraction agrees with the hash
+        # of a numerically equal integer, float or Decimal instance, we
+        # follow the rules for numeric hashes outlined in the
+        # documentation.  (See library docs, 'Built-in Types').
+
+        try:
+            dinv = pow(self._denominator, -1, _PyHASH_MODULUS)
+        except ValueError:
+            # ValueError means there is no modular inverse.
+            hash_ = _PyHASH_INF
+        else:
+            # The general algorithm now specifies that the absolute value of
+            # the hash is
+            #    (|N| * dinv) % P
+            # where N is self._numerator and P is _PyHASH_MODULUS.  That's
+            # optimized here in two ways:  first, for a non-negative int i,
+            # hash(i) == i % P, but the int hash implementation doesn't need
+            # to divide, and is faster than doing % P explicitly.  So we do
+            #    hash(|N| * dinv)
+            # instead.  Second, N is unbounded, so its product with dinv may
+            # be arbitrarily expensive to compute.  The final answer is the
+            # same if we use the bounded |N| % P instead, which can again
+            # be done with an int hash() call.  If 0 <= i < P, hash(i) == i,
+            # so this nested hash() call wastes a bit of time making a
+            # redundant copy when |N| < P, but can save an arbitrarily large
+            # amount of computation for large |N|.
+            hash_ = hash(hash(abs(self._numerator)) * dinv)
+        result = hash_ if self._numerator >= 0 else -hash_
+        return -2 if result == -1 else result
+
+    def __eq__(a, b):
+        """a == b"""
+        if type(b) is int:
+            return a._numerator == b and a._denominator == 1
+        if isinstance(b, numbers.Rational):
+            return (a._numerator == b.numerator and
+                    a._denominator == b.denominator)
+        if isinstance(b, numbers.Complex) and b.imag == 0:
+            b = b.real
+        if isinstance(b, float):
+            if math.isnan(b) or math.isinf(b):
+                # comparisons with an infinity or nan should behave in
+                # the same way for any finite a, so treat a as zero.
+                return 0.0 == b
+            else:
+                return a == a.from_float(b)
+        else:
+            # Since a doesn't know how to compare with b, let's give b
+            # a chance to compare itself with a.
+            return NotImplemented
+
+    def _richcmp(self, other, op):
+        """Helper for comparison operators, for internal use only.
+
+        Implement comparison between a Rational instance `self`, and
+        either another Rational instance or a float `other`.  If
+        `other` is not a Rational instance or a float, return
+        NotImplemented. `op` should be one of the six standard
+        comparison operators.
+
+        """
+        # convert other to a Rational instance where reasonable.
+        if isinstance(other, numbers.Rational):
+            return op(self._numerator * other.denominator,
+                      self._denominator * other.numerator)
+        if isinstance(other, float):
+            if math.isnan(other) or math.isinf(other):
+                return op(0.0, other)
+            else:
+                return op(self, self.from_float(other))
+        else:
+            return NotImplemented
+
+    def __lt__(a, b):
+        """a < b"""
+        return a._richcmp(b, operator.lt)
+
+    def __gt__(a, b):
+        """a > b"""
+        return a._richcmp(b, operator.gt)
+
+    def __le__(a, b):
+        """a <= b"""
+        return a._richcmp(b, operator.le)
+
+    def __ge__(a, b):
+        """a >= b"""
+        return a._richcmp(b, operator.ge)
+
+    def __bool__(a):
+        """a != 0"""
+        # bpo-39274: Use bool() because (a._numerator != 0) can return an
+        # object which is not a bool.
+        return bool(a._numerator)
+
+    # support for pickling, copy, and deepcopy
+
+    def __reduce__(self):
+        return (self.__class__, (str(self),))
+
+    def __copy__(self):
+        if type(self) == Fraction:
+            return self     # I'm immutable; therefore I am my own clone
+        return self.__class__(self._numerator, self._denominator)
+
+    def __deepcopy__(self, memo):
+        if type(self) == Fraction:
+            return self     # My components are also immutable
+        return self.__class__(self._numerator, self._denominator)

evalkit_tf446/lib/python3.10/functools.py

@@ -0,0 +1,992 @@
+"""functools.py - Tools for working with functions and callable objects
+"""
+# Python module wrapper for _functools C module
+# to allow utilities written in Python to be added
+# to the functools module.
+# Written by Nick Coghlan <ncoghlan at gmail.com>,
+# Raymond Hettinger <python at rcn.com>,
+# and Łukasz Langa <lukasz at langa.pl>.
+#   Copyright (C) 2006-2013 Python Software Foundation.
+# See C source code for _functools credits/copyright
+
+__all__ = ['update_wrapper', 'wraps', 'WRAPPER_ASSIGNMENTS', 'WRAPPER_UPDATES',
+           'total_ordering', 'cache', 'cmp_to_key', 'lru_cache', 'reduce',
+           'partial', 'partialmethod', 'singledispatch', 'singledispatchmethod',
+           'cached_property']
+
+from abc import get_cache_token
+from collections import namedtuple
+# import types, weakref  # Deferred to single_dispatch()
+from reprlib import recursive_repr
+from _thread import RLock
+from types import GenericAlias
+
+
+################################################################################
+### update_wrapper() and wraps() decorator
+################################################################################
+
+# update_wrapper() and wraps() are tools to help write
+# wrapper functions that can handle naive introspection
+
+WRAPPER_ASSIGNMENTS = ('__module__', '__name__', '__qualname__', '__doc__',
+                       '__annotations__')
+WRAPPER_UPDATES = ('__dict__',)
+def update_wrapper(wrapper,
+                   wrapped,
+                   assigned = WRAPPER_ASSIGNMENTS,
+                   updated = WRAPPER_UPDATES):
+    """Update a wrapper function to look like the wrapped function
+
+       wrapper is the function to be updated
+       wrapped is the original function
+       assigned is a tuple naming the attributes assigned directly
+       from the wrapped function to the wrapper function (defaults to
+       functools.WRAPPER_ASSIGNMENTS)
+       updated is a tuple naming the attributes of the wrapper that
+       are updated with the corresponding attribute from the wrapped
+       function (defaults to functools.WRAPPER_UPDATES)
+    """
+    for attr in assigned:
+        try:
+            value = getattr(wrapped, attr)
+        except AttributeError:
+            pass
+        else:
+            setattr(wrapper, attr, value)
+    for attr in updated:
+        getattr(wrapper, attr).update(getattr(wrapped, attr, {}))
+    # Issue #17482: set __wrapped__ last so we don't inadvertently copy it
+    # from the wrapped function when updating __dict__
+    wrapper.__wrapped__ = wrapped
+    # Return the wrapper so this can be used as a decorator via partial()
+    return wrapper
+
+def wraps(wrapped,
+          assigned = WRAPPER_ASSIGNMENTS,
+          updated = WRAPPER_UPDATES):
+    """Decorator factory to apply update_wrapper() to a wrapper function
+
+       Returns a decorator that invokes update_wrapper() with the decorated
+       function as the wrapper argument and the arguments to wraps() as the
+       remaining arguments. Default arguments are as for update_wrapper().
+       This is a convenience function to simplify applying partial() to
+       update_wrapper().
+    """
+    return partial(update_wrapper, wrapped=wrapped,
+                   assigned=assigned, updated=updated)
+
+
+################################################################################
+### total_ordering class decorator
+################################################################################
+
+# The total ordering functions all invoke the root magic method directly
+# rather than using the corresponding operator.  This avoids possible
+# infinite recursion that could occur when the operator dispatch logic
+# detects a NotImplemented result and then calls a reflected method.
+
+def _gt_from_lt(self, other, NotImplemented=NotImplemented):
+    'Return a > b.  Computed by @total_ordering from (not a < b) and (a != b).'
+    op_result = type(self).__lt__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return not op_result and self != other
+
+def _le_from_lt(self, other, NotImplemented=NotImplemented):
+    'Return a <= b.  Computed by @total_ordering from (a < b) or (a == b).'
+    op_result = type(self).__lt__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return op_result or self == other
+
+def _ge_from_lt(self, other, NotImplemented=NotImplemented):
+    'Return a >= b.  Computed by @total_ordering from (not a < b).'
+    op_result = type(self).__lt__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return not op_result
+
+def _ge_from_le(self, other, NotImplemented=NotImplemented):
+    'Return a >= b.  Computed by @total_ordering from (not a <= b) or (a == b).'
+    op_result = type(self).__le__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return not op_result or self == other
+
+def _lt_from_le(self, other, NotImplemented=NotImplemented):
+    'Return a < b.  Computed by @total_ordering from (a <= b) and (a != b).'
+    op_result = type(self).__le__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return op_result and self != other
+
+def _gt_from_le(self, other, NotImplemented=NotImplemented):
+    'Return a > b.  Computed by @total_ordering from (not a <= b).'
+    op_result = type(self).__le__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return not op_result
+
+def _lt_from_gt(self, other, NotImplemented=NotImplemented):
+    'Return a < b.  Computed by @total_ordering from (not a > b) and (a != b).'
+    op_result = type(self).__gt__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return not op_result and self != other
+
+def _ge_from_gt(self, other, NotImplemented=NotImplemented):
+    'Return a >= b.  Computed by @total_ordering from (a > b) or (a == b).'
+    op_result = type(self).__gt__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return op_result or self == other
+
+def _le_from_gt(self, other, NotImplemented=NotImplemented):
+    'Return a <= b.  Computed by @total_ordering from (not a > b).'
+    op_result = type(self).__gt__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return not op_result
+
+def _le_from_ge(self, other, NotImplemented=NotImplemented):
+    'Return a <= b.  Computed by @total_ordering from (not a >= b) or (a == b).'
+    op_result = type(self).__ge__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return not op_result or self == other
+
+def _gt_from_ge(self, other, NotImplemented=NotImplemented):
+    'Return a > b.  Computed by @total_ordering from (a >= b) and (a != b).'
+    op_result = type(self).__ge__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return op_result and self != other
+
+def _lt_from_ge(self, other, NotImplemented=NotImplemented):
+    'Return a < b.  Computed by @total_ordering from (not a >= b).'
+    op_result = type(self).__ge__(self, other)
+    if op_result is NotImplemented:
+        return op_result
+    return not op_result
+
+_convert = {
+    '__lt__': [('__gt__', _gt_from_lt),
+               ('__le__', _le_from_lt),
+               ('__ge__', _ge_from_lt)],
+    '__le__': [('__ge__', _ge_from_le),
+               ('__lt__', _lt_from_le),
+               ('__gt__', _gt_from_le)],
+    '__gt__': [('__lt__', _lt_from_gt),
+               ('__ge__', _ge_from_gt),
+               ('__le__', _le_from_gt)],
+    '__ge__': [('__le__', _le_from_ge),
+               ('__gt__', _gt_from_ge),
+               ('__lt__', _lt_from_ge)]
+}
+
+def total_ordering(cls):
+    """Class decorator that fills in missing ordering methods"""
+    # Find user-defined comparisons (not those inherited from object).
+    roots = {op for op in _convert if getattr(cls, op, None) is not getattr(object, op, None)}
+    if not roots:
+        raise ValueError('must define at least one ordering operation: < > <= >=')
+    root = max(roots)       # prefer __lt__ to __le__ to __gt__ to __ge__
+    for opname, opfunc in _convert[root]:
+        if opname not in roots:
+            opfunc.__name__ = opname
+            setattr(cls, opname, opfunc)
+    return cls
+
+
+################################################################################
+### cmp_to_key() function converter
+################################################################################
+
+def cmp_to_key(mycmp):
+    """Convert a cmp= function into a key= function"""
+    class K(object):
+        __slots__ = ['obj']
+        def __init__(self, obj):
+            self.obj = obj
+        def __lt__(self, other):
+            return mycmp(self.obj, other.obj) < 0
+        def __gt__(self, other):
+            return mycmp(self.obj, other.obj) > 0
+        def __eq__(self, other):
+            return mycmp(self.obj, other.obj) == 0
+        def __le__(self, other):
+            return mycmp(self.obj, other.obj) <= 0
+        def __ge__(self, other):
+            return mycmp(self.obj, other.obj) >= 0
+        __hash__ = None
+    return K
+
+try:
+    from _functools import cmp_to_key
+except ImportError:
+    pass
+
+
+################################################################################
+### reduce() sequence to a single item
+################################################################################
+
+_initial_missing = object()
+
+def reduce(function, sequence, initial=_initial_missing):
+    """
+    reduce(function, iterable[, initial]) -> value
+
+    Apply a function of two arguments cumulatively to the items of a sequence
+    or iterable, from left to right, so as to reduce the iterable to a single
+    value.  For example, reduce(lambda x, y: x+y, [1, 2, 3, 4, 5]) calculates
+    ((((1+2)+3)+4)+5).  If initial is present, it is placed before the items
+    of the iterable in the calculation, and serves as a default when the
+    iterable is empty.
+    """
+
+    it = iter(sequence)
+
+    if initial is _initial_missing:
+        try:
+            value = next(it)
+        except StopIteration:
+            raise TypeError(
+                "reduce() of empty iterable with no initial value") from None
+    else:
+        value = initial
+
+    for element in it:
+        value = function(value, element)
+
+    return value
+
+try:
+    from _functools import reduce
+except ImportError:
+    pass
+
+
+################################################################################
+### partial() argument application
+################################################################################
+
+# Purely functional, no descriptor behaviour
+class partial:
+    """New function with partial application of the given arguments
+    and keywords.
+    """
+
+    __slots__ = "func", "args", "keywords", "__dict__", "__weakref__"
+
+    def __new__(cls, func, /, *args, **keywords):
+        if not callable(func):
+            raise TypeError("the first argument must be callable")
+
+        if hasattr(func, "func"):
+            args = func.args + args
+            keywords = {**func.keywords, **keywords}
+            func = func.func
+
+        self = super(partial, cls).__new__(cls)
+
+        self.func = func
+        self.args = args
+        self.keywords = keywords
+        return self
+
+    def __call__(self, /, *args, **keywords):
+        keywords = {**self.keywords, **keywords}
+        return self.func(*self.args, *args, **keywords)
+
+    @recursive_repr()
+    def __repr__(self):
+        qualname = type(self).__qualname__
+        args = [repr(self.func)]
+        args.extend(repr(x) for x in self.args)
+        args.extend(f"{k}={v!r}" for (k, v) in self.keywords.items())
+        if type(self).__module__ == "functools":
+            return f"functools.{qualname}({', '.join(args)})"
+        return f"{qualname}({', '.join(args)})"
+
+    def __reduce__(self):
+        return type(self), (self.func,), (self.func, self.args,
+               self.keywords or None, self.__dict__ or None)
+
+    def __setstate__(self, state):
+        if not isinstance(state, tuple):
+            raise TypeError("argument to __setstate__ must be a tuple")
+        if len(state) != 4:
+            raise TypeError(f"expected 4 items in state, got {len(state)}")
+        func, args, kwds, namespace = state
+        if (not callable(func) or not isinstance(args, tuple) or
+           (kwds is not None and not isinstance(kwds, dict)) or
+           (namespace is not None and not isinstance(namespace, dict))):
+            raise TypeError("invalid partial state")
+
+        args = tuple(args) # just in case it's a subclass
+        if kwds is None:
+            kwds = {}
+        elif type(kwds) is not dict: # XXX does it need to be *exactly* dict?
+            kwds = dict(kwds)
+        if namespace is None:
+            namespace = {}
+
+        self.__dict__ = namespace
+        self.func = func
+        self.args = args
+        self.keywords = kwds
+
+try:
+    from _functools import partial
+except ImportError:
+    pass
+
+# Descriptor version
+class partialmethod(object):
+    """Method descriptor with partial application of the given arguments
+    and keywords.
+
+    Supports wrapping existing descriptors and handles non-descriptor
+    callables as instance methods.
+    """
+
+    def __init__(self, func, /, *args, **keywords):
+        if not callable(func) and not hasattr(func, "__get__"):
+            raise TypeError("{!r} is not callable or a descriptor"
+                                 .format(func))
+
+        # func could be a descriptor like classmethod which isn't callable,
+        # so we can't inherit from partial (it verifies func is callable)
+        if isinstance(func, partialmethod):
+            # flattening is mandatory in order to place cls/self before all
+            # other arguments
+            # it's also more efficient since only one function will be called
+            self.func = func.func
+            self.args = func.args + args
+            self.keywords = {**func.keywords, **keywords}
+        else:
+            self.func = func
+            self.args = args
+            self.keywords = keywords
+
+    def __repr__(self):
+        args = ", ".join(map(repr, self.args))
+        keywords = ", ".join("{}={!r}".format(k, v)
+                                 for k, v in self.keywords.items())
+        format_string = "{module}.{cls}({func}, {args}, {keywords})"
+        return format_string.format(module=self.__class__.__module__,
+                                    cls=self.__class__.__qualname__,
+                                    func=self.func,
+                                    args=args,
+                                    keywords=keywords)
+
+    def _make_unbound_method(self):
+        def _method(cls_or_self, /, *args, **keywords):
+            keywords = {**self.keywords, **keywords}
+            return self.func(cls_or_self, *self.args, *args, **keywords)
+        _method.__isabstractmethod__ = self.__isabstractmethod__
+        _method._partialmethod = self
+        return _method
+
+    def __get__(self, obj, cls=None):
+        get = getattr(self.func, "__get__", None)
+        result = None
+        if get is not None:
+            new_func = get(obj, cls)
+            if new_func is not self.func:
+                # Assume __get__ returning something new indicates the
+                # creation of an appropriate callable
+                result = partial(new_func, *self.args, **self.keywords)
+                try:
+                    result.__self__ = new_func.__self__
+                except AttributeError:
+                    pass
+        if result is None:
+            # If the underlying descriptor didn't do anything, treat this
+            # like an instance method
+            result = self._make_unbound_method().__get__(obj, cls)
+        return result
+
+    @property
+    def __isabstractmethod__(self):
+        return getattr(self.func, "__isabstractmethod__", False)
+
+    __class_getitem__ = classmethod(GenericAlias)
+
+
+# Helper functions
+
+def _unwrap_partial(func):
+    while isinstance(func, partial):
+        func = func.func
+    return func
+
+################################################################################
+### LRU Cache function decorator
+################################################################################
+
+_CacheInfo = namedtuple("CacheInfo", ["hits", "misses", "maxsize", "currsize"])
+
+class _HashedSeq(list):
+    """ This class guarantees that hash() will be called no more than once
+        per element.  This is important because the lru_cache() will hash
+        the key multiple times on a cache miss.
+
+    """
+
+    __slots__ = 'hashvalue'
+
+    def __init__(self, tup, hash=hash):
+        self[:] = tup
+        self.hashvalue = hash(tup)
+
+    def __hash__(self):
+        return self.hashvalue
+
+def _make_key(args, kwds, typed,
+             kwd_mark = (object(),),
+             fasttypes = {int, str},
+             tuple=tuple, type=type, len=len):
+    """Make a cache key from optionally typed positional and keyword arguments
+
+    The key is constructed in a way that is flat as possible rather than
+    as a nested structure that would take more memory.
+
+    If there is only a single argument and its data type is known to cache
+    its hash value, then that argument is returned without a wrapper.  This
+    saves space and improves lookup speed.
+
+    """
+    # All of code below relies on kwds preserving the order input by the user.
+    # Formerly, we sorted() the kwds before looping.  The new way is *much*
+    # faster; however, it means that f(x=1, y=2) will now be treated as a
+    # distinct call from f(y=2, x=1) which will be cached separately.
+    key = args
+    if kwds:
+        key += kwd_mark
+        for item in kwds.items():
+            key += item
+    if typed:
+        key += tuple(type(v) for v in args)
+        if kwds:
+            key += tuple(type(v) for v in kwds.values())
+    elif len(key) == 1 and type(key[0]) in fasttypes:
+        return key[0]
+    return _HashedSeq(key)
+
+def lru_cache(maxsize=128, typed=False):
+    """Least-recently-used cache decorator.
+
+    If *maxsize* is set to None, the LRU features are disabled and the cache
+    can grow without bound.
+
+    If *typed* is True, arguments of different types will be cached separately.
+    For example, f(3.0) and f(3) will be treated as distinct calls with
+    distinct results.
+
+    Arguments to the cached function must be hashable.
+
+    View the cache statistics named tuple (hits, misses, maxsize, currsize)
+    with f.cache_info().  Clear the cache and statistics with f.cache_clear().
+    Access the underlying function with f.__wrapped__.
+
+    See:  https://en.wikipedia.org/wiki/Cache_replacement_policies#Least_recently_used_(LRU)
+
+    """
+
+    # Users should only access the lru_cache through its public API:
+    #       cache_info, cache_clear, and f.__wrapped__
+    # The internals of the lru_cache are encapsulated for thread safety and
+    # to allow the implementation to change (including a possible C version).
+
+    if isinstance(maxsize, int):
+        # Negative maxsize is treated as 0
+        if maxsize < 0:
+            maxsize = 0
+    elif callable(maxsize) and isinstance(typed, bool):
+        # The user_function was passed in directly via the maxsize argument
+        user_function, maxsize = maxsize, 128
+        wrapper = _lru_cache_wrapper(user_function, maxsize, typed, _CacheInfo)
+        wrapper.cache_parameters = lambda : {'maxsize': maxsize, 'typed': typed}
+        return update_wrapper(wrapper, user_function)
+    elif maxsize is not None:
+        raise TypeError(
+            'Expected first argument to be an integer, a callable, or None')
+
+    def decorating_function(user_function):
+        wrapper = _lru_cache_wrapper(user_function, maxsize, typed, _CacheInfo)
+        wrapper.cache_parameters = lambda : {'maxsize': maxsize, 'typed': typed}
+        return update_wrapper(wrapper, user_function)
+
+    return decorating_function
+
+def _lru_cache_wrapper(user_function, maxsize, typed, _CacheInfo):
+    # Constants shared by all lru cache instances:
+    sentinel = object()          # unique object used to signal cache misses
+    make_key = _make_key         # build a key from the function arguments
+    PREV, NEXT, KEY, RESULT = 0, 1, 2, 3   # names for the link fields
+
+    cache = {}
+    hits = misses = 0
+    full = False
+    cache_get = cache.get    # bound method to lookup a key or return None
+    cache_len = cache.__len__  # get cache size without calling len()
+    lock = RLock()           # because linkedlist updates aren't threadsafe
+    root = []                # root of the circular doubly linked list
+    root[:] = [root, root, None, None]     # initialize by pointing to self
+
+    if maxsize == 0:
+
+        def wrapper(*args, **kwds):
+            # No caching -- just a statistics update
+            nonlocal misses
+            misses += 1
+            result = user_function(*args, **kwds)
+            return result
+
+    elif maxsize is None:
+
+        def wrapper(*args, **kwds):
+            # Simple caching without ordering or size limit
+            nonlocal hits, misses
+            key = make_key(args, kwds, typed)
+            result = cache_get(key, sentinel)
+            if result is not sentinel:
+                hits += 1
+                return result
+            misses += 1
+            result = user_function(*args, **kwds)
+            cache[key] = result
+            return result
+
+    else:
+
+        def wrapper(*args, **kwds):
+            # Size limited caching that tracks accesses by recency
+            nonlocal root, hits, misses, full
+            key = make_key(args, kwds, typed)
+            with lock:
+                link = cache_get(key)
+                if link is not None:
+                    # Move the link to the front of the circular queue
+                    link_prev, link_next, _key, result = link
+                    link_prev[NEXT] = link_next
+                    link_next[PREV] = link_prev
+                    last = root[PREV]
+                    last[NEXT] = root[PREV] = link
+                    link[PREV] = last
+                    link[NEXT] = root
+                    hits += 1
+                    return result
+                misses += 1
+            result = user_function(*args, **kwds)
+            with lock:
+                if key in cache:
+                    # Getting here means that this same key was added to the
+                    # cache while the lock was released.  Since the link
+                    # update is already done, we need only return the
+                    # computed result and update the count of misses.
+                    pass
+                elif full:
+                    # Use the old root to store the new key and result.
+                    oldroot = root
+                    oldroot[KEY] = key
+                    oldroot[RESULT] = result
+                    # Empty the oldest link and make it the new root.
+                    # Keep a reference to the old key and old result to
+                    # prevent their ref counts from going to zero during the
+                    # update. That will prevent potentially arbitrary object
+                    # clean-up code (i.e. __del__) from running while we're
+                    # still adjusting the links.
+                    root = oldroot[NEXT]
+                    oldkey = root[KEY]
+                    oldresult = root[RESULT]
+                    root[KEY] = root[RESULT] = None
+                    # Now update the cache dictionary.
+                    del cache[oldkey]
+                    # Save the potentially reentrant cache[key] assignment
+                    # for last, after the root and links have been put in
+                    # a consistent state.
+                    cache[key] = oldroot
+                else:
+                    # Put result in a new link at the front of the queue.
+                    last = root[PREV]
+                    link = [last, root, key, result]
+                    last[NEXT] = root[PREV] = cache[key] = link
+                    # Use the cache_len bound method instead of the len() function
+                    # which could potentially be wrapped in an lru_cache itself.
+                    full = (cache_len() >= maxsize)
+            return result
+
+    def cache_info():
+        """Report cache statistics"""
+        with lock:
+            return _CacheInfo(hits, misses, maxsize, cache_len())
+
+    def cache_clear():
+        """Clear the cache and cache statistics"""
+        nonlocal hits, misses, full
+        with lock:
+            cache.clear()
+            root[:] = [root, root, None, None]
+            hits = misses = 0
+            full = False
+
+    wrapper.cache_info = cache_info
+    wrapper.cache_clear = cache_clear
+    return wrapper
+
+try:
+    from _functools import _lru_cache_wrapper
+except ImportError:
+    pass
+
+
+################################################################################
+### cache -- simplified access to the infinity cache
+################################################################################
+
+def cache(user_function, /):
+    'Simple lightweight unbounded cache.  Sometimes called "memoize".'
+    return lru_cache(maxsize=None)(user_function)
+
+
+################################################################################
+### singledispatch() - single-dispatch generic function decorator
+################################################################################
+
+def _c3_merge(sequences):
+    """Merges MROs in *sequences* to a single MRO using the C3 algorithm.
+
+    Adapted from https://www.python.org/download/releases/2.3/mro/.
+
+    """
+    result = []
+    while True:
+        sequences = [s for s in sequences if s]   # purge empty sequences
+        if not sequences:
+            return result
+        for s1 in sequences:   # find merge candidates among seq heads
+            candidate = s1[0]
+            for s2 in sequences:
+                if candidate in s2[1:]:
+                    candidate = None
+                    break      # reject the current head, it appears later
+            else:
+                break
+        if candidate is None:
+            raise RuntimeError("Inconsistent hierarchy")
+        result.append(candidate)
+        # remove the chosen candidate
+        for seq in sequences:
+            if seq[0] == candidate:
+                del seq[0]
+
+def _c3_mro(cls, abcs=None):
+    """Computes the method resolution order using extended C3 linearization.
+
+    If no *abcs* are given, the algorithm works exactly like the built-in C3
+    linearization used for method resolution.
+
+    If given, *abcs* is a list of abstract base classes that should be inserted
+    into the resulting MRO. Unrelated ABCs are ignored and don't end up in the
+    result. The algorithm inserts ABCs where their functionality is introduced,
+    i.e. issubclass(cls, abc) returns True for the class itself but returns
+    False for all its direct base classes. Implicit ABCs for a given class
+    (either registered or inferred from the presence of a special method like
+    __len__) are inserted directly after the last ABC explicitly listed in the
+    MRO of said class. If two implicit ABCs end up next to each other in the
+    resulting MRO, their ordering depends on the order of types in *abcs*.
+
+    """
+    for i, base in enumerate(reversed(cls.__bases__)):
+        if hasattr(base, '__abstractmethods__'):
+            boundary = len(cls.__bases__) - i
+            break   # Bases up to the last explicit ABC are considered first.
+    else:
+        boundary = 0
+    abcs = list(abcs) if abcs else []
+    explicit_bases = list(cls.__bases__[:boundary])
+    abstract_bases = []
+    other_bases = list(cls.__bases__[boundary:])
+    for base in abcs:
+        if issubclass(cls, base) and not any(
+                issubclass(b, base) for b in cls.__bases__
+            ):
+            # If *cls* is the class that introduces behaviour described by
+            # an ABC *base*, insert said ABC to its MRO.
+            abstract_bases.append(base)
+    for base in abstract_bases:
+        abcs.remove(base)
+    explicit_c3_mros = [_c3_mro(base, abcs=abcs) for base in explicit_bases]
+    abstract_c3_mros = [_c3_mro(base, abcs=abcs) for base in abstract_bases]
+    other_c3_mros = [_c3_mro(base, abcs=abcs) for base in other_bases]
+    return _c3_merge(
+        [[cls]] +
+        explicit_c3_mros + abstract_c3_mros + other_c3_mros +
+        [explicit_bases] + [abstract_bases] + [other_bases]
+    )
+
+def _compose_mro(cls, types):
+    """Calculates the method resolution order for a given class *cls*.
+
+    Includes relevant abstract base classes (with their respective bases) from
+    the *types* iterable. Uses a modified C3 linearization algorithm.
+
+    """
+    bases = set(cls.__mro__)
+    # Remove entries which are already present in the __mro__ or unrelated.
+    def is_related(typ):
+        return (typ not in bases and hasattr(typ, '__mro__')
+                                 and not isinstance(typ, GenericAlias)
+                                 and issubclass(cls, typ))
+    types = [n for n in types if is_related(n)]
+    # Remove entries which are strict bases of other entries (they will end up
+    # in the MRO anyway.
+    def is_strict_base(typ):
+        for other in types:
+            if typ != other and typ in other.__mro__:
+                return True
+        return False
+    types = [n for n in types if not is_strict_base(n)]
+    # Subclasses of the ABCs in *types* which are also implemented by
+    # *cls* can be used to stabilize ABC ordering.
+    type_set = set(types)
+    mro = []
+    for typ in types:
+        found = []
+        for sub in typ.__subclasses__():
+            if sub not in bases and issubclass(cls, sub):
+                found.append([s for s in sub.__mro__ if s in type_set])
+        if not found:
+            mro.append(typ)
+            continue
+        # Favor subclasses with the biggest number of useful bases
+        found.sort(key=len, reverse=True)
+        for sub in found:
+            for subcls in sub:
+                if subcls not in mro:
+                    mro.append(subcls)
+    return _c3_mro(cls, abcs=mro)
+
+def _find_impl(cls, registry):
+    """Returns the best matching implementation from *registry* for type *cls*.
+
+    Where there is no registered implementation for a specific type, its method
+    resolution order is used to find a more generic implementation.
+
+    Note: if *registry* does not contain an implementation for the base
+    *object* type, this function may return None.
+
+    """
+    mro = _compose_mro(cls, registry.keys())
+    match = None
+    for t in mro:
+        if match is not None:
+            # If *match* is an implicit ABC but there is another unrelated,
+            # equally matching implicit ABC, refuse the temptation to guess.
+            if (t in registry and t not in cls.__mro__
+                              and match not in cls.__mro__
+                              and not issubclass(match, t)):
+                raise RuntimeError("Ambiguous dispatch: {} or {}".format(
+                    match, t))
+            break
+        if t in registry:
+            match = t
+    return registry.get(match)
+
+def singledispatch(func):
+    """Single-dispatch generic function decorator.
+
+    Transforms a function into a generic function, which can have different
+    behaviours depending upon the type of its first argument. The decorated
+    function acts as the default implementation, and additional
+    implementations can be registered using the register() attribute of the
+    generic function.
+    """
+    # There are many programs that use functools without singledispatch, so we
+    # trade-off making singledispatch marginally slower for the benefit of
+    # making start-up of such applications slightly faster.
+    import types, weakref
+
+    registry = {}
+    dispatch_cache = weakref.WeakKeyDictionary()
+    cache_token = None
+
+    def dispatch(cls):
+        """generic_func.dispatch(cls) -> <function implementation>
+
+        Runs the dispatch algorithm to return the best available implementation
+        for the given *cls* registered on *generic_func*.
+
+        """
+        nonlocal cache_token
+        if cache_token is not None:
+            current_token = get_cache_token()
+            if cache_token != current_token:
+                dispatch_cache.clear()
+                cache_token = current_token
+        try:
+            impl = dispatch_cache[cls]
+        except KeyError:
+            try:
+                impl = registry[cls]
+            except KeyError:
+                impl = _find_impl(cls, registry)
+            dispatch_cache[cls] = impl
+        return impl
+
+    def _is_valid_dispatch_type(cls):
+        return isinstance(cls, type) and not isinstance(cls, GenericAlias)
+
+    def register(cls, func=None):
+        """generic_func.register(cls, func) -> func
+
+        Registers a new implementation for the given *cls* on a *generic_func*.
+
+        """
+        nonlocal cache_token
+        if _is_valid_dispatch_type(cls):
+            if func is None:
+                return lambda f: register(cls, f)
+        else:
+            if func is not None:
+                raise TypeError(
+                    f"Invalid first argument to `register()`. "
+                    f"{cls!r} is not a class."
+                )
+            ann = getattr(cls, '__annotations__', {})
+            if not ann:
+                raise TypeError(
+                    f"Invalid first argument to `register()`: {cls!r}. "
+                    f"Use either `@register(some_class)` or plain `@register` "
+                    f"on an annotated function."
+                )
+            func = cls
+
+            # only import typing if annotation parsing is necessary
+            from typing import get_type_hints
+            argname, cls = next(iter(get_type_hints(func).items()))
+            if not _is_valid_dispatch_type(cls):
+                raise TypeError(
+                    f"Invalid annotation for {argname!r}. "
+                    f"{cls!r} is not a class."
+                )
+
+        registry[cls] = func
+        if cache_token is None and hasattr(cls, '__abstractmethods__'):
+            cache_token = get_cache_token()
+        dispatch_cache.clear()
+        return func
+
+    def wrapper(*args, **kw):
+        if not args:
+            raise TypeError(f'{funcname} requires at least '
+                            '1 positional argument')
+
+        return dispatch(args[0].__class__)(*args, **kw)
+
+    funcname = getattr(func, '__name__', 'singledispatch function')
+    registry[object] = func
+    wrapper.register = register
+    wrapper.dispatch = dispatch
+    wrapper.registry = types.MappingProxyType(registry)
+    wrapper._clear_cache = dispatch_cache.clear
+    update_wrapper(wrapper, func)
+    return wrapper
+
+
+# Descriptor version
+class singledispatchmethod:
+    """Single-dispatch generic method descriptor.
+
+    Supports wrapping existing descriptors and handles non-descriptor
+    callables as instance methods.
+    """
+
+    def __init__(self, func):
+        if not callable(func) and not hasattr(func, "__get__"):
+            raise TypeError(f"{func!r} is not callable or a descriptor")
+
+        self.dispatcher = singledispatch(func)
+        self.func = func
+
+    def register(self, cls, method=None):
+        """generic_method.register(cls, func) -> func
+
+        Registers a new implementation for the given *cls* on a *generic_method*.
+        """
+        return self.dispatcher.register(cls, func=method)
+
+    def __get__(self, obj, cls=None):
+        def _method(*args, **kwargs):
+            method = self.dispatcher.dispatch(args[0].__class__)
+            return method.__get__(obj, cls)(*args, **kwargs)
+
+        _method.__isabstractmethod__ = self.__isabstractmethod__
+        _method.register = self.register
+        update_wrapper(_method, self.func)
+        return _method
+
+    @property
+    def __isabstractmethod__(self):
+        return getattr(self.func, '__isabstractmethod__', False)
+
+
+################################################################################
+### cached_property() - computed once per instance, cached as attribute
+################################################################################
+
+_NOT_FOUND = object()
+
+
+class cached_property:
+    def __init__(self, func):
+        self.func = func
+        self.attrname = None
+        self.__doc__ = func.__doc__
+        self.lock = RLock()
+
+    def __set_name__(self, owner, name):
+        if self.attrname is None:
+            self.attrname = name
+        elif name != self.attrname:
+            raise TypeError(
+                "Cannot assign the same cached_property to two different names "
+                f"({self.attrname!r} and {name!r})."
+            )
+
+    def __get__(self, instance, owner=None):
+        if instance is None:
+            return self
+        if self.attrname is None:
+            raise TypeError(
+                "Cannot use cached_property instance without calling __set_name__ on it.")
+        try:
+            cache = instance.__dict__
+        except AttributeError:  # not all objects have __dict__ (e.g. class defines slots)
+            msg = (
+                f"No '__dict__' attribute on {type(instance).__name__!r} "
+                f"instance to cache {self.attrname!r} property."
+            )
+            raise TypeError(msg) from None
+        val = cache.get(self.attrname, _NOT_FOUND)
+        if val is _NOT_FOUND:
+            with self.lock:
+                # check if another thread filled cache while we awaited lock
+                val = cache.get(self.attrname, _NOT_FOUND)
+                if val is _NOT_FOUND:
+                    val = self.func(instance)
+                    try:
+                        cache[self.attrname] = val
+                    except TypeError:
+                        msg = (
+                            f"The '__dict__' attribute on {type(instance).__name__!r} instance "
+                            f"does not support item assignment for caching {self.attrname!r} property."
+                        )
+                        raise TypeError(msg) from None
+        return val
+
+    __class_getitem__ = classmethod(GenericAlias)