我们从Python开源项目中，提取了以下11个代码示例，用于说明如何使用pip._vendor.pkg_resources.RequirementParseError()。
def deduce_helpful_msg(req): """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 requirements file. try: with open(req, 'r') as fp: # parse first line only next(parse_requirements(fp.read())) msg += " The argument you provided " + \ "(%s) appears to be a" % (req) + \ " requirements file. If that is the" + \ " case, use the '-r' flag to install" + \ " the packages specified within it." except RequirementParseError: logger.debug("Cannot parse '%s' as requirements \ file" % (req), exc_info=1) else: msg += " File '%s' does not exist." % (req) return msg
def __init__(self, req, comes_from, source_dir=None, editable=False, link=None, as_egg=False, update=True, pycompile=True, markers=None, isolated=False, options=None, wheel_cache=None, constraint=False): self.extras = () if isinstance(req, six.string_types): try: req = pkg_resources.Requirement.parse(req) except pkg_resources.RequirementParseError: if os.path.sep in req: add_msg = "It looks like a path. Does it exist ?" elif '=' in req and not any(op in req for op in operators): add_msg = "= is not a valid operator. Did you mean == ?" else: add_msg = traceback.format_exc() raise InstallationError( "Invalid requirement: '%s'\n%s" % (req, add_msg)) self.extras = req.extras self.req = req self.comes_from = comes_from self.constraint = constraint self.source_dir = source_dir self.editable = editable self._wheel_cache = wheel_cache self.link = self.original_link = link self.as_egg = as_egg self.markers = markers self._egg_info_path = None # This holds the pkg_resources.Distribution object if this requirement # is already available: self.satisfied_by = None # This hold the pkg_resources.Distribution object if this requirement # conflicts with another installed distribution: self.conflicts_with = None # Temporary build location self._temp_build_dir = None # Used to store the global directory where the _temp_build_dir should # have been created. Cf _correct_build_location method. self._ideal_build_dir = None # True if the editable should be updated: self.update = update # Set to True after successful installation self.install_succeeded = None # UninstallPathSet of uninstalled distribution (for possible rollback) self.uninstalled = None # Set True if a legitimate do-nothing-on-uninstall has happened - e.g. # system site packages, stdlib packages. self.nothing_to_uninstall = False self.use_user_site = False self.target_dir = None self.options = options if options else {} self.pycompile = pycompile # Set to True after successful preparation of this requirement self.prepared = False self.isolated = isolated
