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def iter_encode(input, encoding=UTF8, errors='strict'):
"""
“Pull”-based encoder.
:param input: An iterable of Unicode strings.
:param encoding: An :class:`Encoding` object or a label string.
:param errors: Type of error handling. See :func:`codecs.register`.
:raises: :exc:`~exceptions.LookupEr... |
def decode(self, input, final=False):
"""Decode one chunk of the input.
:param input: A byte string.
:param final:
Indicate that no more input is available.
Must be :obj:`True` if this is the last call.
:returns: An Unicode string.
"""
decoder = ... |
def _cf_dictionary_from_tuples(tuples):
"""
Given a list of Python tuples, create an associated CFDictionary.
"""
dictionary_size = len(tuples)
# We need to get the dictionary keys and values out in the same order.
keys = (t[0] for t in tuples)
values = (t[1] for t in tuples)
cf_keys = ... |
def _cf_string_to_unicode(value):
"""
Creates a Unicode string from a CFString object. Used entirely for error
reporting.
Yes, it annoys me quite a lot that this function is this complex.
"""
value_as_void_p = ctypes.cast(value, ctypes.POINTER(ctypes.c_void_p))
string = CoreFoundation.CFSt... |
def _assert_no_error(error, exception_class=None):
"""
Checks the return code and throws an exception if there is an error to
report
"""
if error == 0:
return
cf_error_string = Security.SecCopyErrorMessageString(error, None)
output = _cf_string_to_unicode(cf_error_string)
CoreFo... |
def _cert_array_from_pem(pem_bundle):
"""
Given a bundle of certs in PEM format, turns them into a CFArray of certs
that can be used to validate a cert chain.
"""
# Normalize the PEM bundle's line endings.
pem_bundle = pem_bundle.replace(b"\r\n", b"\n")
der_certs = [
base64.b64decod... |
def _temporary_keychain():
"""
This function creates a temporary Mac keychain that we can use to work with
credentials. This keychain uses a one-time password and a temporary file to
store the data. We expect to have one keychain per socket. The returned
SecKeychainRef must be freed by the caller, i... |
def _load_items_from_file(keychain, path):
"""
Given a single file, loads all the trust objects from it into arrays and
the keychain.
Returns a tuple of lists: the first list is a list of identities, the
second a list of certs.
"""
certificates = []
identities = []
result_array = Non... |
def _load_client_cert_chain(keychain, *paths):
"""
Load certificates and maybe keys from a number of files. Has the end goal
of returning a CFArray containing one SecIdentityRef, and then zero or more
SecCertificateRef objects, suitable for use as a client certificate trust
chain.
"""
# Ok, ... |
def get_redirect_location(self):
"""
Should we redirect and where to?
:returns: Truthy redirect location string if we got a redirect status
code and valid location. ``None`` if redirect status and no
location. ``False`` if not a redirect status code.
"""
... |
def _init_length(self, request_method):
"""
Set initial length value for Response content if available.
"""
length = self.headers.get('content-length')
if length is not None:
if self.chunked:
# This Response will fail with an IncompleteRead if it can'... |
def _init_decoder(self):
"""
Set-up the _decoder attribute if necessary.
"""
# Note: content-encoding value should be case-insensitive, per RFC 7230
# Section 3.2
content_encoding = self.headers.get('content-encoding', '').lower()
if self._decoder is None:
... |
def _flush_decoder(self):
"""
Flushes the decoder. Should only be called if the decoder is actually
being used.
"""
if self._decoder:
buf = self._decoder.decompress(b'')
return buf + self._decoder.flush()
return b'' |
def _error_catcher(self):
"""
Catch low-level python exceptions, instead re-raising urllib3
variants, so that low-level exceptions are not leaked in the
high-level api.
On exit, release the connection back to the pool.
"""
clean_exit = False
try:
... |
def read(self, amt=None, decode_content=None, cache_content=False):
"""
Similar to :meth:`httplib.HTTPResponse.read`, but with two additional
parameters: ``decode_content`` and ``cache_content``.
:param amt:
How much of the content to read. If specified, caching is skipped
... |
def from_httplib(ResponseCls, r, **response_kw):
"""
Given an :class:`httplib.HTTPResponse` instance ``r``, return a
corresponding :class:`urllib3.response.HTTPResponse` object.
Remaining parameters are passed to the HTTPResponse constructor, along
with ``original_response=r``.
... |
def read_chunked(self, amt=None, decode_content=None):
"""
Similar to :meth:`HTTPResponse.read`, but with an additional
parameter: ``decode_content``.
:param amt:
How much of the content to read. If specified, caching is skipped
because it doesn't make sense to c... |
def geturl(self):
"""
Returns the URL that was the source of this response.
If the request that generated this response redirected, this method
will return the final redirect location.
"""
if self.retries is not None and len(self.retries.history):
return self.... |
def ok(self, text=u"OK", err=False):
"""Set Ok (success) finalizer to a spinner."""
# Do not display spin text for ok state
self._text = None
_text = to_text(text) if text else u"OK"
err = err or not self.write_to_stdout
self._freeze(_text, err=err) |
def fail(self, text=u"FAIL", err=False):
"""Set fail finalizer to a spinner."""
# Do not display spin text for fail state
self._text = None
_text = text if text else u"FAIL"
err = err or not self.write_to_stdout
self._freeze(_text, err=err) |
def write_err(self, text):
"""Write error text in the terminal without breaking the spinner."""
stderr = self.stderr
if self.stderr.closed:
stderr = sys.stderr
stderr.write(decode_output(u"\r", target_stream=stderr))
stderr.write(decode_output(CLEAR_LINE, target_strea... |
def _freeze(self, final_text, err=False):
"""Stop spinner, compose last frame and 'freeze' it."""
if not final_text:
final_text = ""
target = self.stderr if err else self.stdout
if target.closed:
target = sys.stderr if err else sys.stdout
text = to_text(fi... |
def describe_token_expr(expr):
"""Like `describe_token` but for token expressions."""
if ':' in expr:
type, value = expr.split(':', 1)
if type == 'name':
return value
else:
type = expr
return _describe_token_type(type) |
def get_lexer(environment):
"""Return a lexer which is probably cached."""
key = (environment.block_start_string,
environment.block_end_string,
environment.variable_start_string,
environment.variable_end_string,
environment.comment_start_string,
environment... |
def tokenize(self, source, name=None, filename=None, state=None):
"""Calls tokeniter + tokenize and wraps it in a token stream.
"""
stream = self.tokeniter(source, name, filename, state)
return TokenStream(self.wrap(stream, name, filename), name, filename) |
def wrap(self, stream, name=None, filename=None):
"""This is called with the stream as returned by `tokenize` and wraps
every token in a :class:`Token` and converts the value.
"""
for lineno, token, value in stream:
if token in ignored_tokens:
continue
... |
def load_pyproject_toml(
use_pep517, # type: Optional[bool]
pyproject_toml, # type: str
setup_py, # type: str
req_name # type: str
):
# type: (...) -> Optional[Tuple[List[str], str, List[str]]]
"""Load the pyproject.toml file.
Parameters:
use_pep517 - Has the user requested PEP ... |
def iter_installable_versions(self):
"""Iterate through CPython versions available for Pipenv to install.
"""
for name in self._pyenv('install', '--list').out.splitlines():
try:
version = Version.parse(name.strip())
except ValueError:
conti... |
def find_version_to_install(self, name):
"""Find a version in pyenv from the version supplied.
A ValueError is raised if a matching version cannot be found.
"""
version = Version.parse(name)
if version.patch is not None:
return name
try:
best_matc... |
def install(self, version):
"""Install the given version with pyenv.
The version must be a ``Version`` instance representing a version
found in pyenv.
A ValueError is raised if the given version does not have a match in
pyenv. A PyenvError is raised if the pyenv command fails.
... |
def parse_editable(editable_req):
# type: (str) -> Tuple[Optional[str], str, Optional[Set[str]]]
"""Parses an editable requirement into:
- a requirement name
- an URL
- extras
- editable options
Accepted requirements:
svn+http://blahblah@rev#egg=Foobar[baz]&subdirecto... |
def deduce_helpful_msg(req):
# type: (str) -> str
"""Returns helpful msg in case requirements file does not exist,
or cannot be parsed.
:params req: Requirements file path
"""
msg = ""
if os.path.exists(req):
msg = " It does exist."
# Try to parse and check if it is a requir... |
def install_req_from_line(
name, # type: str
comes_from=None, # type: Optional[Union[str, InstallRequirement]]
use_pep517=None, # type: Optional[bool]
isolated=False, # type: bool
options=None, # type: Optional[Dict[str, Any]]
wheel_cache=None, # type: Optional[WheelCache]
constraint=F... |
def url_to_file_path(url, filecache):
"""Return the file cache path based on the URL.
This does not ensure the file exists!
"""
key = CacheController.cache_url(url)
return filecache._fn(key) |
def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os... |
def remove_existing_pidfile(pidfile_path):
""" Remove the named PID file if it exists.
Removing a PID file that doesn't already exist puts us in the
desired state, so we ignore the condition if the file does not
exist.
"""
try:
os.remove(pidfile_path)
except OSError... |
def release(self):
""" Release the lock.
Removes the PID file to release the lock, or raises an
error if the current process does not hold the lock.
"""
if not self.is_locked():
raise NotLocked("%s is not locked" % self.path)
if not self.i_am_loc... |
def export(self, location):
"""
Export the Bazaar repository at the url to the destination location
"""
# Remove the location to make sure Bazaar can export it correctly
if os.path.exists(location):
rmtree(location)
with TempDirectory(kind="export") as temp_d... |
def search_packages_info(query):
"""
Gather details from installed distributions. Print distribution name,
version, location, and installed files. Installed files requires a
pip generated 'installed-files.txt' in the distributions '.egg-info'
directory.
"""
installed = {}
for p in pkg_re... |
def print_results(distributions, list_files=False, verbose=False):
"""
Print the informations from installed distributions found.
"""
results_printed = False
for i, dist in enumerate(distributions):
results_printed = True
if i > 0:
logger.info("---")
name = dist.... |
def fail(self, msg, lineno=None, exc=TemplateSyntaxError):
"""Convenience method that raises `exc` with the message, passed
line number or last line number as well as the current name and
filename.
"""
if lineno is None:
lineno = self.stream.current.lineno
rai... |
def fail_unknown_tag(self, name, lineno=None):
"""Called if the parser encounters an unknown tag. Tries to fail
with a human readable error message that could help to identify
the problem.
"""
return self._fail_ut_eof(name, self._end_token_stack, lineno) |
def fail_eof(self, end_tokens=None, lineno=None):
"""Like fail_unknown_tag but for end of template situations."""
stack = list(self._end_token_stack)
if end_tokens is not None:
stack.append(end_tokens)
return self._fail_ut_eof(None, stack, lineno) |
def is_tuple_end(self, extra_end_rules=None):
"""Are we at the end of a tuple?"""
if self.stream.current.type in ('variable_end', 'block_end', 'rparen'):
return True
elif extra_end_rules is not None:
return self.stream.current.test_any(extra_end_rules)
return Fals... |
def free_identifier(self, lineno=None):
"""Return a new free identifier as :class:`~jinja2.nodes.InternalName`."""
self._last_identifier += 1
rv = object.__new__(nodes.InternalName)
nodes.Node.__init__(rv, 'fi%d' % self._last_identifier, lineno=lineno)
return rv |
def parse_statement(self):
"""Parse a single statement."""
token = self.stream.current
if token.type != 'name':
self.fail('tag name expected', token.lineno)
self._tag_stack.append(token.value)
pop_tag = True
try:
if token.value in _statement_keywor... |
def parse_statements(self, end_tokens, drop_needle=False):
"""Parse multiple statements into a list until one of the end tokens
is reached. This is used to parse the body of statements as it also
parses template data if appropriate. The parser checks first if the
current token is a col... |
def parse_set(self):
"""Parse an assign statement."""
lineno = next(self.stream).lineno
target = self.parse_assign_target(with_namespace=True)
if self.stream.skip_if('assign'):
expr = self.parse_tuple()
return nodes.Assign(target, expr, lineno=lineno)
filt... |
def parse_for(self):
"""Parse a for loop."""
lineno = self.stream.expect('name:for').lineno
target = self.parse_assign_target(extra_end_rules=('name:in',))
self.stream.expect('name:in')
iter = self.parse_tuple(with_condexpr=False,
extra_end_rules=(... |
def parse_if(self):
"""Parse an if construct."""
node = result = nodes.If(lineno=self.stream.expect('name:if').lineno)
while 1:
node.test = self.parse_tuple(with_condexpr=False)
node.body = self.parse_statements(('name:elif', 'name:else',
... |
def parse_assign_target(self, with_tuple=True, name_only=False,
extra_end_rules=None, with_namespace=False):
"""Parse an assignment target. As Jinja2 allows assignments to
tuples, this function can parse all allowed assignment targets. Per
default assignments to tup... |
def parse(self):
"""Parse the whole template into a `Template` node."""
result = nodes.Template(self.subparse(), lineno=1)
result.set_environment(self.environment)
return result |
def get_trace(self):
'''This returns an abbreviated stack trace with lines that only concern
the caller. In other words, the stack trace inside the Pexpect module
is not included. '''
tblist = traceback.extract_tb(sys.exc_info()[2])
tblist = [item for item in tblist if ('pexpect... |
def parse_uri(uri):
"""Parses a URI using the regex given in Appendix B of RFC 3986.
(scheme, authority, path, query, fragment) = parse_uri(uri)
"""
groups = URI.match(uri).groups()
return (groups[1], groups[3], groups[4], groups[6], groups[8]) |
def _urlnorm(cls, uri):
"""Normalize the URL to create a safe key for the cache"""
(scheme, authority, path, query, fragment) = parse_uri(uri)
if not scheme or not authority:
raise Exception("Only absolute URIs are allowed. uri = %s" % uri)
scheme = scheme.lower()
au... |
def cached_request(self, request):
"""
Return a cached response if it exists in the cache, otherwise
return False.
"""
cache_url = self.cache_url(request.url)
logger.debug('Looking up "%s" in the cache', cache_url)
cc = self.parse_cache_control(request.headers)
... |
def cache_response(self, request, response, body=None, status_codes=None):
"""
Algorithm for caching requests.
This assumes a requests Response object.
"""
# From httplib2: Don't cache 206's since we aren't going to
# handle byte range requests
cac... |
def update_cached_response(self, request, response):
"""On a 304 we will get a new set of headers that we want to
update our cached value with, assuming we have one.
This should only ever be called when we've sent an ETag and
gotten a 304 as the response.
"""
cache_url =... |
def close (self):
"""Close the file descriptor.
Calling this method a second time does nothing, but if the file
descriptor was closed elsewhere, :class:`OSError` will be raised.
"""
if self.child_fd == -1:
return
self.flush()
os.close(self.child_fd)
... |
def isalive (self):
'''This checks if the file descriptor is still valid. If :func:`os.fstat`
does not raise an exception then we assume it is alive. '''
if self.child_fd == -1:
return False
try:
os.fstat(self.child_fd)
return True
except:
... |
def read_nonblocking(self, size=1, timeout=-1):
"""
Read from the file descriptor and return the result as a string.
The read_nonblocking method of :class:`SpawnBase` assumes that a call
to os.read will not block (timeout parameter is ignored). This is not
the case for POSIX fil... |
def clear_caches():
"""Jinja2 keeps internal caches for environments and lexers. These are
used so that Jinja2 doesn't have to recreate environments and lexers all
the time. Normally you don't have to care about that but if you are
measuring memory consumption you may want to clean the caches.
"""... |
def import_string(import_name, silent=False):
"""Imports an object based on a string. This is useful if you want to
use import paths as endpoints or something similar. An import path can
be specified either in dotted notation (``xml.sax.saxutils.escape``)
or with a colon as object delimiter (``xml.sax... |
def pformat(obj, verbose=False):
"""Prettyprint an object. Either use the `pretty` library or the
builtin `pprint`.
"""
try:
from pretty import pretty
return pretty(obj, verbose=verbose)
except ImportError:
from pprint import pformat
return pformat(obj) |
def unicode_urlencode(obj, charset='utf-8', for_qs=False):
"""URL escapes a single bytestring or unicode string with the
given charset if applicable to URL safe quoting under all rules
that need to be considered under all supported Python versions.
If non strings are provided they are converted to thei... |
def select_autoescape(enabled_extensions=('html', 'htm', 'xml'),
disabled_extensions=(),
default_for_string=True,
default=False):
"""Intelligently sets the initial value of autoescaping based on the
filename of the template. This is the recommen... |
def htmlsafe_json_dumps(obj, dumper=None, **kwargs):
"""Works exactly like :func:`dumps` but is safe for use in ``<script>``
tags. It accepts the same arguments and returns a JSON string. Note that
this is available in templates through the ``|tojson`` filter which will
also mark the result as safe. ... |
def copy(self):
"""Return a shallow copy of the instance."""
rv = self.__class__(self.capacity)
rv._mapping.update(self._mapping)
rv._queue = deque(self._queue)
return rv |
def setdefault(self, key, default=None):
"""Set `default` if the key is not in the cache otherwise
leave unchanged. Return the value of this key.
"""
self._wlock.acquire()
try:
try:
return self[key]
except KeyError:
self[key... |
def clear(self):
"""Clear the cache."""
self._wlock.acquire()
try:
self._mapping.clear()
self._queue.clear()
finally:
self._wlock.release() |
def items(self):
"""Return a list of items."""
result = [(key, self._mapping[key]) for key in list(self._queue)]
result.reverse()
return result |
def license_fallback(vendor_dir, sdist_name):
"""Hardcoded license URLs. Check when updating if those are still needed"""
libname = libname_from_dir(sdist_name)
if libname not in HARDCODED_LICENSE_URLS:
raise ValueError('No hardcoded URL for {} license'.format(libname))
url = HARDCODED_LICENSE_... |
def libname_from_dir(dirname):
"""Reconstruct the library name without it's version"""
parts = []
for part in dirname.split('-'):
if part[0].isdigit():
break
parts.append(part)
return '-'.join(parts) |
def license_destination(vendor_dir, libname, filename):
"""Given the (reconstructed) library name, find appropriate destination"""
normal = vendor_dir / libname
if normal.is_dir():
return normal / filename
lowercase = vendor_dir / libname.lower().replace('-', '_')
if lowercase.is_dir():
... |
def _convert_hashes(values):
"""Convert Pipfile.lock hash lines into InstallRequirement option format.
The option format uses a str-list mapping. Keys are hash algorithms, and
the list contains all values of that algorithm.
"""
hashes = {}
if not values:
return hashes
for value in v... |
def _suppress_distutils_logs():
"""Hack to hide noise generated by `setup.py develop`.
There isn't a good way to suppress them now, so let's monky-patch.
See https://bugs.python.org/issue25392.
"""
f = distutils.log.Log._log
def _log(log, level, msg, args):
if level >= distutils.log.ER... |
def _find_egg_info(ireq):
"""Find this package's .egg-info directory.
Due to how sdists are designed, the .egg-info directory cannot be reliably
found without running setup.py to aggregate all configurations. This
function instead uses some heuristics to locate the egg-info directory
that most like... |
def fs_str(string):
"""Encodes a string into the proper filesystem encoding
Borrowed from pip-tools
"""
if isinstance(string, str):
return string
assert not isinstance(string, bytes)
return string.encode(_fs_encoding) |
def _get_path(path):
"""
Fetch the string value from a path-like object
Returns **None** if there is no string value.
"""
if isinstance(path, (six.string_types, bytes)):
return path
path_type = type(path)
try:
path_repr = path_type.__fspath__(path)
except AttributeError... |
def fs_encode(path):
"""
Encode a filesystem path to the proper filesystem encoding
:param Union[str, bytes] path: A string-like path
:returns: A bytes-encoded filesystem path representation
"""
path = _get_path(path)
if path is None:
raise TypeError("expected a valid path to encod... |
def fs_decode(path):
"""
Decode a filesystem path using the proper filesystem encoding
:param path: The filesystem path to decode from bytes or string
:return: [description]
:rtype: [type]
"""
path = _get_path(path)
if path is None:
raise TypeError("expected a valid path to dec... |
def trace_graph(graph):
"""Build a collection of "traces" for each package.
A trace is a list of names that eventually leads to the package. For
example, if A and B are root dependencies, A depends on C and D, B
depends on C, and C depends on D, the return value would be like::
{
N... |
def _validate_timeout(cls, value, name):
""" Check that a timeout attribute is valid.
:param value: The timeout value to validate
:param name: The name of the timeout attribute to validate. This is
used to specify in error messages.
:return: The validated and casted version ... |
def clone(self):
""" Create a copy of the timeout object
Timeout properties are stored per-pool but each request needs a fresh
Timeout object to ensure each one has its own start/stop configured.
:return: a copy of the timeout object
:rtype: :class:`Timeout`
"""
... |
def start_connect(self):
""" Start the timeout clock, used during a connect() attempt
:raises urllib3.exceptions.TimeoutStateError: if you attempt
to start a timer that has been started already.
"""
if self._start_connect is not None:
raise TimeoutStateError("Tim... |
def connect_timeout(self):
""" Get the value to use when setting a connection timeout.
This will be a positive float or integer, the value None
(never timeout), or the default system timeout.
:return: Connect timeout.
:rtype: int, float, :attr:`Timeout.DEFAULT_TIMEOUT` or None
... |
def read_timeout(self):
""" Get the value for the read timeout.
This assumes some time has elapsed in the connection timeout and
computes the read timeout appropriately.
If self.total is set, the read timeout is dependent on the amount of
time taken by the connect timeout. If t... |
def _new_conn(self):
"""
Establish a new connection via the SOCKS proxy.
"""
extra_kw = {}
if self.source_address:
extra_kw['source_address'] = self.source_address
if self.socket_options:
extra_kw['socket_options'] = self.socket_options
t... |
def get_requirement_info(dist):
# type: (Distribution) -> RequirementInfo
"""
Compute and return values (req, editable, comments) for use in
FrozenRequirement.from_dist().
"""
if not dist_is_editable(dist):
return (None, False, [])
location = os.path.normcase(os.path.abspath(dist.lo... |
def detect_proc():
"""Detect /proc filesystem style.
This checks the /proc/{pid} directory for possible formats. Returns one of
the followings as str:
* `stat`: Linux-style, i.e. ``/proc/{pid}/stat``.
* `status`: BSD-style, i.e. ``/proc/{pid}/status``.
"""
pid = os.getpid()
for name in... |
def get_process_mapping():
"""Try to look up the process tree via the /proc interface.
"""
stat_name = detect_proc()
self_tty = _get_stat(os.getpid(), stat_name)[0]
processes = {}
for pid in os.listdir('/proc'):
if not pid.isdigit():
continue
try:
tty, ppi... |
def NamedTemporaryFile(
mode="w+b",
buffering=-1,
encoding=None,
newline=None,
suffix=None,
prefix=None,
dir=None,
delete=True,
wrapper_class_override=None,
):
"""Create and return a temporary file.
Arguments:
'prefix', 'suffix', 'dir' -- as for mkstemp.
'mode' -- the... |
def fast_exit(code):
"""Exit without garbage collection, this speeds up exit by about 10ms for
things like bash completion.
"""
sys.stdout.flush()
sys.stderr.flush()
os._exit(code) |
def _bashcomplete(cmd, prog_name, complete_var=None):
"""Internal handler for the bash completion support."""
if complete_var is None:
complete_var = '_%s_COMPLETE' % (prog_name.replace('-', '_')).upper()
complete_instr = os.environ.get(complete_var)
if not complete_instr:
return
fr... |
def augment_usage_errors(ctx, param=None):
"""Context manager that attaches extra information to exceptions that
fly.
"""
try:
yield
except BadParameter as e:
if e.ctx is None:
e.ctx = ctx
if param is not None and e.param is None:
e.param = param
... |
def iter_params_for_processing(invocation_order, declaration_order):
"""Given a sequence of parameters in the order as should be considered
for processing and an iterable of parameters that exist, this returns
a list in the correct order as they should be processed.
"""
def sort_key(item):
t... |
def scope(self, cleanup=True):
"""This helper method can be used with the context object to promote
it to the current thread local (see :func:`get_current_context`).
The default behavior of this is to invoke the cleanup functions which
can be disabled by setting `cleanup` to `False`. Th... |
def command_path(self):
"""The computed command path. This is used for the ``usage``
information on the help page. It's automatically created by
combining the info names of the chain of contexts to the root.
"""
rv = ''
if self.info_name is not None:
rv = se... |
def find_root(self):
"""Finds the outermost context."""
node = self
while node.parent is not None:
node = node.parent
return node |
def find_object(self, object_type):
"""Finds the closest object of a given type."""
node = self
while node is not None:
if isinstance(node.obj, object_type):
return node.obj
node = node.parent |
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