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def _get_requests_session(): """Load requests lazily.""" global requests_session if requests_session is not None: return requests_session import requests requests_session = requests.Session() adapter = requests.adapters.HTTPAdapter( max_retries=environments.PIPENV_MAX_RETRIES ...
def convert_toml_outline_tables(parsed): """Converts all outline tables to inline tables.""" def convert_tomlkit_table(section): for key, value in section._body: if not key: continue if hasattr(value, "keys") and not isinstance(value, tomlkit.items.InlineTable): ...
def run_command(cmd, *args, **kwargs): """ Take an input command and run it, handling exceptions and error codes and returning its stdout and stderr. :param cmd: The list of command and arguments. :type cmd: list :returns: A 2-tuple of the output and error from the command :rtype: Tuple[str...
def parse_python_version(output): """Parse a Python version output returned by `python --version`. Return a dict with three keys: major, minor, and micro. Each value is a string containing a version part. Note: The micro part would be `'0'` if it's missing from the input string. """ version_li...
def escape_grouped_arguments(s): """Prepares a string for the shell (on Windows too!) Only for use on grouped arguments (passed as a string to Popen) """ if s is None: return None # Additional escaping for windows paths if os.name == "nt": s = "{}".format(s.replace("\\", "\\\\"...
def venv_resolve_deps( deps, which, project, pre=False, clear=False, allow_global=False, pypi_mirror=None, dev=False, pipfile=None, lockfile=None, keep_outdated=False ): """ Resolve dependencies for a pipenv project, acts as a portal to the target environment. Re...
def resolve_deps( deps, which, project, sources=None, python=False, clear=False, pre=False, allow_global=False, req_dir=None ): """Given a list of dependencies, return a resolved list of dependencies, using pip-tools -- and their hashes, using the warehouse API / pip. """...
def convert_deps_to_pip(deps, project=None, r=True, include_index=True): """"Converts a Pipfile-formatted dependency to a pip-formatted one.""" from .vendor.requirementslib.models.requirements import Requirement dependencies = [] for dep_name, dep in deps.items(): if project: projec...
def is_required_version(version, specified_version): """Check to see if there's a hard requirement for version number provided in the Pipfile. """ # Certain packages may be defined with multiple values. if isinstance(specified_version, dict): specified_version = specified_version.get("versio...
def is_installable_file(path): """Determine if a path can potentially be installed""" from .vendor.pip_shims.shims import is_installable_dir, is_archive_file from .patched.notpip._internal.utils.packaging import specifiers from ._compat import Path if hasattr(path, "keys") and any( key for ...
def is_file(package): """Determine if a package name is for a File dependency.""" if hasattr(package, "keys"): return any(key for key in package.keys() if key in ["file", "path"]) if os.path.exists(str(package)): return True for start in SCHEME_LIST: if str(package).startswith(...
def pep423_name(name): """Normalize package name to PEP 423 style standard.""" name = name.lower() if any(i not in name for i in (VCS_LIST + SCHEME_LIST)): return name.replace("_", "-") else: return name
def proper_case(package_name): """Properly case project name from pypi.org.""" # Hit the simple API. r = _get_requests_session().get( "https://pypi.org/pypi/{0}/json".format(package_name), timeout=0.3, stream=True ) if not r.ok: raise IOError( "Unable to find package {0} ...
def find_windows_executable(bin_path, exe_name): """Given an executable name, search the given location for an executable""" requested_path = get_windows_path(bin_path, exe_name) if os.path.isfile(requested_path): return requested_path try: pathext = os.environ["PATHEXT"] except Key...
def get_canonical_names(packages): """Canonicalize a list of packages and return a set of canonical names""" from .vendor.packaging.utils import canonicalize_name if not isinstance(packages, Sequence): if not isinstance(packages, six.string_types): return packages packages = [pa...
def find_requirements(max_depth=3): """Returns the path of a Pipfile in parent directories.""" i = 0 for c, d, f in walk_up(os.getcwd()): i += 1 if i < max_depth: if "requirements.txt": r = os.path.join(c, "requirements.txt") if os.path.isfile(r): ...
def temp_environ(): """Allow the ability to set os.environ temporarily""" environ = dict(os.environ) try: yield finally: os.environ.clear() os.environ.update(environ)
def temp_path(): """Allow the ability to set os.environ temporarily""" path = [p for p in sys.path] try: yield finally: sys.path = [p for p in path]
def is_valid_url(url): """Checks if a given string is an url""" pieces = urlparse(url) return all([pieces.scheme, pieces.netloc])
def download_file(url, filename): """Downloads file from url to a path with filename""" r = _get_requests_session().get(url, stream=True) if not r.ok: raise IOError("Unable to download file") with open(filename, "wb") as f: f.write(r.content)
def normalize_drive(path): """Normalize drive in path so they stay consistent. This currently only affects local drives on Windows, which can be identified with either upper or lower cased drive names. The case is always converted to uppercase because it seems to be preferred. See: <https://github...
def is_readonly_path(fn): """Check if a provided path exists and is readonly. Permissions check is `bool(path.stat & stat.S_IREAD)` or `not os.access(path, os.W_OK)` """ if os.path.exists(fn): return (os.stat(fn).st_mode & stat.S_IREAD) or not os.access(fn, os.W_OK) return False
def handle_remove_readonly(func, path, exc): """Error handler for shutil.rmtree. Windows source repo folders are read-only by default, so this error handler attempts to set them as writeable and then proceed with deletion.""" # Check for read-only attribute default_warning_message = ( "Unab...
def safe_expandvars(value): """Call os.path.expandvars if value is a string, otherwise do nothing. """ if isinstance(value, six.string_types): return os.path.expandvars(value) return value
def translate_markers(pipfile_entry): """Take a pipfile entry and normalize its markers Provide a pipfile entry which may have 'markers' as a key or it may have any valid key from `packaging.markers.marker_context.keys()` and standardize the format into {'markers': 'key == "some_value"'}. :param p...
def is_virtual_environment(path): """Check if a given path is a virtual environment's root. This is done by checking if the directory contains a Python executable in its bin/Scripts directory. Not technically correct, but good enough for general usage. """ if not path.is_dir(): return F...
def sys_version(version_tuple): """ Set a temporary sys.version_info tuple :param version_tuple: a fake sys.version_info tuple """ old_version = sys.version_info sys.version_info = version_tuple yield sys.version_info = old_version
def add_to_set(original_set, element): """Given a set and some arbitrary element, add the element(s) to the set""" if not element: return original_set if isinstance(element, Set): original_set |= element elif isinstance(element, (list, tuple)): original_set |= set(element) el...
def is_url_equal(url, other_url): # type: (str, str) -> bool """ Compare two urls by scheme, host, and path, ignoring auth :param str url: The initial URL to compare :param str url: Second url to compare to the first :return: Whether the URLs are equal without **auth**, **query**, and **fragmen...
def make_posix(path): # type: (str) -> str """ Convert a path with possible windows-style separators to a posix-style path (with **/** separators instead of **\\** separators). :param Text path: A path to convert. :return: A converted posix-style path :rtype: Text >>> make_posix("c:/us...
def find_python(finder, line=None): """ Given a `pythonfinder.Finder` instance and an optional line, find a corresponding python :param finder: A :class:`pythonfinder.Finder` instance to use for searching :type finder: :class:pythonfinder.Finder` :param str line: A version, path, name, or nothing, ...
def is_python_command(line): """ Given an input, checks whether the input is a request for python or notself. This can be a version, a python runtime name, or a generic 'python' or 'pythonX.Y' :param str line: A potential request to find python :returns: Whether the line is a python lookup :rt...
def get_hash(self, ireq, ireq_hashes=None): """ Retrieve hashes for a specific ``InstallRequirement`` instance. :param ireq: An ``InstallRequirement`` to retrieve hashes for :type ireq: :class:`~pip_shims.InstallRequirement` :return: A set of hashes. :rtype: Set ...
def _get_process_mapping(): """Select a way to obtain process information from the system. * `/proc` is used if supported. * The system `ps` utility is used as a fallback option. """ for impl in (proc, ps): try: mapping = impl.get_process_mapping() except EnvironmentErro...
def _iter_process_command(mapping, pid, max_depth): """Iterator to traverse up the tree, yielding `argv[0]` of each process. """ for _ in range(max_depth): try: proc = mapping[pid] except KeyError: # We've reached the root process. Give up. break try: ...
def _get_login_shell(proc_cmd): """Form shell information from the SHELL environment variable if possible. """ login_shell = os.environ.get('SHELL', '') if login_shell: proc_cmd = login_shell else: proc_cmd = proc_cmd[1:] return (os.path.basename(proc_cmd).lower(), proc_cmd)
def get_shell(pid=None, max_depth=6): """Get the shell that the supplied pid or os.getpid() is running in. """ pid = str(pid or os.getpid()) mapping = _get_process_mapping() for proc_cmd in _iter_process_command(mapping, pid, max_depth): if proc_cmd.startswith('-'): # Login shell! Let's u...
def send(self, request, stream=False, timeout=None, verify=True, cert=None, proxies=None): """Sends PreparedRequest object. Returns Response object. :param request: The :class:`PreparedRequest <PreparedRequest>` being sent. :param stream: (optional) Whether to stream the request co...
def init_poolmanager(self, connections, maxsize, block=DEFAULT_POOLBLOCK, **pool_kwargs): """Initializes a urllib3 PoolManager. This method should not be called from user code, and is only exposed for use when subclassing the :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`. ...
def proxy_manager_for(self, proxy, **proxy_kwargs): """Return urllib3 ProxyManager for the given proxy. This method should not be called from user code, and is only exposed for use when subclassing the :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`. :param proxy: The prox...
def build_response(self, req, resp): """Builds a :class:`Response <requests.Response>` object from a urllib3 response. This should not be called from user code, and is only exposed for use when subclassing the :class:`HTTPAdapter <requests.adapters.HTTPAdapter>` :param req: The ...
def get_connection(self, url, proxies=None): """Returns a urllib3 connection for the given URL. This should not be called from user code, and is only exposed for use when subclassing the :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`. :param url: The URL to connect to. :pa...
def close(self): """Disposes of any internal state. Currently, this closes the PoolManager and any active ProxyManager, which closes any pooled connections. """ self.poolmanager.clear() for proxy in self.proxy_manager.values(): proxy.clear()
def request_url(self, request, proxies): """Obtain the url to use when making the final request. If the message is being sent through a HTTP proxy, the full URL has to be used. Otherwise, we should only use the path portion of the URL. This should not be called from user code, and is o...
def strip_ssh_from_git_uri(uri): # type: (S) -> S """Return git+ssh:// formatted URI to git+git@ format""" if isinstance(uri, six.string_types): if "git+ssh://" in uri: parsed = urlparse(uri) # split the path on the first separating / so we can put the first segment ...
def add_ssh_scheme_to_git_uri(uri): # type: (S) -> S """Cleans VCS uris from pipenv.patched.notpip format""" if isinstance(uri, six.string_types): # Add scheme for parsing purposes, this is also what pip does if uri.startswith("git+") and "://" not in uri: uri = uri.replace("git+...
def is_vcs(pipfile_entry): # type: (PipfileType) -> bool """Determine if dictionary entry from Pipfile is for a vcs dependency.""" if isinstance(pipfile_entry, Mapping): return any(key for key in pipfile_entry.keys() if key in VCS_LIST) elif isinstance(pipfile_entry, six.string_types): ...
def multi_split(s, split): # type: (S, Iterable[S]) -> List[S] """Splits on multiple given separators.""" for r in split: s = s.replace(r, "|") return [i for i in s.split("|") if len(i) > 0]
def convert_entry_to_path(path): # type: (Dict[S, Union[S, bool, Tuple[S], List[S]]]) -> S """Convert a pipfile entry to a string""" if not isinstance(path, Mapping): raise TypeError("expecting a mapping, received {0!r}".format(path)) if not any(key in path for key in ["file", "path"]): ...
def is_installable_file(path): # type: (PipfileType) -> bool """Determine if a path can potentially be installed""" from packaging import specifiers if isinstance(path, Mapping): path = convert_entry_to_path(path) # If the string starts with a valid specifier operator, test if it is a vali...
def get_path(root, path, default=_UNSET): """Retrieve a value from a nested object via a tuple representing the lookup path. >>> root = {'a': {'b': {'c': [[1], [2], [3]]}}} >>> get_path(root, ('a', 'b', 'c', 2, 0)) 3 The path format is intentionally consistent with that of :func:`remap`. ...
def _hash_comparison(self): """ Return a comparison of actual and expected hash values. Example:: Expected sha256 abcdeabcdeabcdeabcdeabcdeabcdeabcdeabcdeabcde or 123451234512345123451234512345123451234512345 Got bcdefbcdefb...
def reset(self): """ Reset the UniversalDetector and all of its probers back to their initial states. This is called by ``__init__``, so you only need to call this directly in between analyses of different documents. """ self.result = {'encoding': None, 'confidence': 0.0...
def feed(self, byte_str): """ Takes a chunk of a document and feeds it through all of the relevant charset probers. After calling ``feed``, you can check the value of the ``done`` attribute to see if you need to continue feeding the ``UniversalDetector`` more data, or if...
def close(self): """ Stop analyzing the current document and come up with a final prediction. :returns: The ``result`` attribute, a ``dict`` with the keys `encoding`, `confidence`, and `language`. """ # Don't bother with checks if we're already done ...
def bash(command="bash"): """Start a bash shell and return a :class:`REPLWrapper` object.""" bashrc = os.path.join(os.path.dirname(__file__), 'bashrc.sh') child = pexpect.spawn(command, ['--rcfile', bashrc], echo=False, encoding='utf-8') # If the user runs 'env', the value of ...
def run_command(self, command, timeout=-1): """Send a command to the REPL, wait for and return output. :param str command: The command to send. Trailing newlines are not needed. This should be a complete block of input that will trigger execution; if a continuation prompt is found a...
def parse_hashes(self): # type: () -> None """ Parse hashes from *self.line* and set them on the current object. :returns: Nothing :rtype: None """ line, hashes = self.split_hashes(self.line) self.hashes = hashes self.line = line
def parse_extras(self): # type: () -> None """ Parse extras from *self.line* and set them on the current object :returns: Nothing :rtype: None """ extras = None if "@" in self.line or self.is_vcs or self.is_url: line = "{0}".format(self.line) ...
def get_url(self): # type: () -> STRING_TYPE """Sets ``self.name`` if given a **PEP-508** style URL""" line = self.line try: parsed = URI.parse(line) line = parsed.to_string(escape_password=False, direct=False, strip_ref=True) except ValueError: ...
def requirement_info(self): # type: () -> Tuple[Optional[S], Tuple[Optional[S], ...], Optional[S]] """ Generates a 3-tuple of the requisite *name*, *extras* and *url* to generate a :class:`~packaging.requirements.Requirement` out of. :return: A Tuple of an optional name, a Tuple...
def line_is_installable(self): # type: () -> bool """ This is a safeguard against decoy requirements when a user installs a package whose name coincides with the name of a folder in the cwd, e.g. install *alembic* when there is a folder called *alembic* in the working directory. ...
def fork_pty(): '''This implements a substitute for the forkpty system call. This should be more portable than the pty.fork() function. Specifically, this should work on Solaris. Modified 10.06.05 by Geoff Marshall: Implemented __fork_pty() method to resolve the issue with Python's pty.fork() not s...
def pty_make_controlling_tty(tty_fd): '''This makes the pseudo-terminal the controlling tty. This should be more portable than the pty.fork() function. Specifically, this should work on Solaris. ''' child_name = os.ttyname(tty_fd) # Disconnect from controlling tty, if any. Raises OSError of ENXIO...
def safecall(func): """Wraps a function so that it swallows exceptions.""" def wrapper(*args, **kwargs): try: return func(*args, **kwargs) except Exception: pass return wrapper
def make_str(value): """Converts a value into a valid string.""" if isinstance(value, bytes): try: return value.decode(get_filesystem_encoding()) except UnicodeError: return value.decode('utf-8', 'replace') return text_type(value)
def make_default_short_help(help, max_length=45): """Return a condensed version of help string.""" words = help.split() total_length = 0 result = [] done = False for word in words: if word[-1:] == '.': done = True new_length = result and 1 + len(word) or len(word) ...
def get_binary_stream(name): """Returns a system stream for byte processing. This essentially returns the stream from the sys module with the given name but it solves some compatibility issues between different Python versions. Primarily this function is necessary for getting binary streams on Pyth...
def get_text_stream(name, encoding=None, errors='strict'): """Returns a system stream for text processing. This usually returns a wrapped stream around a binary stream returned from :func:`get_binary_stream` but it also can take shortcuts on Python 3 for already correctly configured streams. :para...
def open_file(filename, mode='r', encoding=None, errors='strict', lazy=False, atomic=False): """This is similar to how the :class:`File` works but for manual usage. Files are opened non lazy by default. This can open regular files as well as stdin/stdout if ``'-'`` is passed. If stdin/s...
def format_filename(filename, shorten=False): """Formats a filename for user display. The main purpose of this function is to ensure that the filename can be displayed at all. This will decode the filename to unicode if necessary in a way that it will not fail. Optionally, it can shorten the filename...
def get_app_dir(app_name, roaming=True, force_posix=False): r"""Returns the config folder for the application. The default behavior is to return whatever is most appropriate for the operating system. To give you an idea, for an app called ``"Foo Bar"``, something like the following folders could be re...
def open(self): """Opens the file if it's not yet open. This call might fail with a :exc:`FileError`. Not handling this error will produce an error that Click shows. """ if self._f is not None: return self._f try: rv, self.should_close = open_str...
def split_args(line): """Version of shlex.split that silently accept incomplete strings. Parameters ---------- line : str The string to split Returns ------- [str] The line split in separated arguments """ lex = shlex.shlex(line, posix=True) lex.whitespace_split...
def confirm(text, default=False, abort=False, prompt_suffix=': ', show_default=True, err=False): """Prompts for confirmation (yes/no question). If the user aborts the input by sending a interrupt signal this function will catch it and raise a :exc:`Abort` exception. .. versionadded:: 4.0 ...
def echo_via_pager(text_or_generator, color=None): """This function takes a text and shows it via an environment specific pager on stdout. .. versionchanged:: 3.0 Added the `color` flag. :param text_or_generator: the text to page, or alternatively, a generator emit...
def progressbar(iterable=None, length=None, label=None, show_eta=True, show_percent=None, show_pos=False, item_show_func=None, fill_char='#', empty_char='-', bar_template='%(label)s [%(bar)s] %(info)s', info_sep=' ', width=36, file=None, color=None): ...
def clear(): """Clears the terminal screen. This will have the effect of clearing the whole visible space of the terminal and moving the cursor to the top left. This does not do anything if not connected to a terminal. .. versionadded:: 2.0 """ if not isatty(sys.stdout): return # ...
def edit(text=None, editor=None, env=None, require_save=True, extension='.txt', filename=None): r"""Edits the given text in the defined editor. If an editor is given (should be the full path to the executable but the regular operating system search path is used for finding the executable) it overr...
def launch(url, wait=False, locate=False): """This function launches the given URL (or filename) in the default viewer application for this file type. If this is an executable, it might launch the executable in a new session. The return value is the exit code of the launched application. Usually, ``0...
def getchar(echo=False): """Fetches a single character from the terminal and returns it. This will always return a unicode character and under certain rare circumstances this might return more than one character. The situations which more than one character is returned is when for whatever reason ...
def pause(info='Press any key to continue ...', err=False): """This command stops execution and waits for the user to press any key to continue. This is similar to the Windows batch "pause" command. If the program is not run through a terminal, this command will instead do nothing. .. versionadde...
def optional(validator): """ A validator that makes an attribute optional. An optional attribute is one which can be set to ``None`` in addition to satisfying the requirements of the sub-validator. :param validator: A validator (or a list of validators) that is used for non-``None`` values...
def copy(self): """Return a shallow copy of this graph. """ other = DirectedGraph() other._vertices = set(self._vertices) other._forwards = {k: set(v) for k, v in self._forwards.items()} other._backwards = {k: set(v) for k, v in self._backwards.items()} return oth...
def add(self, key): """Add a new vertex to the graph. """ if key in self._vertices: raise ValueError('vertex exists') self._vertices.add(key) self._forwards[key] = set() self._backwards[key] = set()
def remove(self, key): """Remove a vertex from the graph, disconnecting all edges from/to it. """ self._vertices.remove(key) for f in self._forwards.pop(key): self._backwards[f].remove(key) for t in self._backwards.pop(key): self._forwards[t].remove(key)
def connect(self, f, t): """Connect two existing vertices. Nothing happens if the vertices are already connected. """ if t not in self._vertices: raise KeyError(t) self._forwards[f].add(t) self._backwards[t].add(f)
def _const_compare_digest_backport(a, b): """ Compare two digests of equal length in constant time. The digests must be of type str/bytes. Returns True if the digests match, and False otherwise. """ result = abs(len(a) - len(b)) for l, r in zip(bytearray(a), bytearray(b)): result |=...
def assert_fingerprint(cert, fingerprint): """ Checks if given fingerprint matches the supplied certificate. :param cert: Certificate as bytes object. :param fingerprint: Fingerprint as string of hexdigits, can be interspersed by colons. """ fingerprint = fingerprint.replace(':...
def resolve_cert_reqs(candidate): """ Resolves the argument to a numeric constant, which can be passed to the wrap_socket function/method from the ssl module. Defaults to :data:`ssl.CERT_NONE`. If given a string it is assumed to be the name of the constant in the :mod:`ssl` module or its abbrevi...
def resolve_ssl_version(candidate): """ like resolve_cert_reqs """ if candidate is None: return PROTOCOL_SSLv23 if isinstance(candidate, str): res = getattr(ssl, candidate, None) if res is None: res = getattr(ssl, 'PROTOCOL_' + candidate) return res ...
def ssl_wrap_socket(sock, keyfile=None, certfile=None, cert_reqs=None, ca_certs=None, server_hostname=None, ssl_version=None, ciphers=None, ssl_context=None, ca_cert_dir=None): """ All arguments except for server_hostname, ssl_context, and ca_cert_dir ...
def is_ipaddress(hostname): """Detects whether the hostname given is an IP address. :param str hostname: Hostname to examine. :return: True if the hostname is an IP address, False otherwise. """ if six.PY3 and isinstance(hostname, bytes): # IDN A-label bytes are ASCII compatible. ho...
def get_backoff_time(self): """ Formula for computing the current backoff :rtype: float """ # We want to consider only the last consecutive errors sequence (Ignore redirects). consecutive_errors_len = len(list(takewhile(lambda x: x.redirect_location is None, ...
def get_retry_after(self, response): """ Get the value of Retry-After in seconds. """ retry_after = response.getheader("Retry-After") if retry_after is None: return None return self.parse_retry_after(retry_after)
def sleep(self, response=None): """ Sleep between retry attempts. This method will respect a server's ``Retry-After`` response header and sleep the duration of the time requested. If that is not present, it will use an exponential backoff. By default, the backoff factor is 0 and ...
def _is_method_retryable(self, method): """ Checks if a given HTTP method should be retried upon, depending if it is included on the method whitelist. """ if self.method_whitelist and method.upper() not in self.method_whitelist: return False return True
def is_retry(self, method, status_code, has_retry_after=False): """ Is this method/status code retryable? (Based on whitelists and control variables such as the number of total retries to allow, whether to respect the Retry-After header, whether this header is present, and whether the re...
def is_exhausted(self): """ Are we out of retries? """ retry_counts = (self.total, self.connect, self.read, self.redirect, self.status) retry_counts = list(filter(None, retry_counts)) if not retry_counts: return False return min(retry_counts) < 0
def increment(self, method=None, url=None, response=None, error=None, _pool=None, _stacktrace=None): """ Return a new Retry object with incremented retry counters. :param response: A response object, or None, if the server did not return a response. :type response:...