B

L��g<�@s�dd
lZdd
l
Z
dd
lZddlmZmZmZmZ
ddlm	Z	m
Z

ddlmZ
ede
�Ze
�e�
Zee
eedfed�dd	�Zejd
d�
e
ed�d
d��
Ze
ed�dd�Zd
S)�N)�NewType�Optional�Tuple�cast)�
specifiers�version)
�Requirement�NormalizedExtra.)�requires_python�version_info�returncCs4|d
krdSt�
|�
}t�d�tt|
��
�
}||kS)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�SpecifierSetr�parse�join�map�str)r
r�requires_python_specifier�python_version�r�A/tmp/pip-unpacked-wheel-hv55ucu3/pip/_internal/utils/packaging.py�check_requires_pythons



ri)
�maxsize)�
req_stringrc

Cst|�
S)
z5Construct a packaging.Requirement object with caching)
r)
rrrr�get_requirement%sr)�extrarc

Cstt
t�d
d|����S)aD
Convert 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	�re�sub�lower)
rrrr�
safe_extra0s	r )�	functools�loggingr�typingrrrrZpip._vendor.packagingrrZ"pip._vendor.packaging.requirementsrrr	�	getLogger�__name__�logger�int�boolr�	lru_cacherr rrrr�<module>
s