o g<@sddlZddlZddlZddlmZmZmZmZddlm Z m Z ddl m Z ede ZeeZdee deedfd efd d Zejd d de d e fddZde d efddZdS)N)NewTypeOptionalTuplecast) specifiersversion RequirementNormalizedExtrarequires_python version_info.returncCs4|durdSt|}tdtt|}||vS)a Check if the given Python version matches a "Requires-Python" specifier. :param version_info: A 3-tuple of ints representing a Python major-minor-micro version to check (e.g. `sys.version_info[:3]`). :return: `True` if the given Python version satisfies the requirement. Otherwise, return `False`. :raises InvalidSpecifier: If `requires_python` has an invalid format. NT.)r SpecifierSetrparsejoinmapstr)r r requires_python_specifierpython_versionr?/usr/lib/python3/dist-packages/pip/_internal/utils/packaging.pycheck_requires_pythons  ri)maxsize req_stringcCst|S)z5Construct a packaging.Requirement object with cachingr)rrrrget_requirement%srextracCstttdd|S)aDConvert an arbitrary string to a standard 'extra' name Any runs of non-alphanumeric characters are replaced with a single '_', and the result is always lowercased. This function is duplicated from ``pkg_resources``. Note that this is not the same to either ``canonicalize_name`` or ``_egg_link_name``. z[^A-Za-z0-9.-]+_)rr resublower)rrrr safe_extra0s r!) functoolsloggingrtypingrrrrpip._vendor.packagingrr"pip._vendor.packaging.requirementsr rr getLogger__name__loggerintboolr lru_cacherr!rrrrs$