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: / lib / python3.6 / site-packages / pip / utils /

Filename : packaging.py

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from __future__ import absolute_import

from email.parser import FeedParser

import logging
import sys

from pip._vendor.packaging import specifiers
from pip._vendor.packaging import version
from pip._vendor import pkg_resources

from pip import exceptions

logger = logging.getLogger(__name__)


def check_requires_python(requires_python):
    """
    Check if the python version in use match the `requires_python` specifier.

    Returns `True` if the version of python in use matches the requirement.
    Returns `False` if the version of python in use does not matches the
    requirement.

    Raises an InvalidSpecifier if `requires_python` have an invalid format.
    """
    if requires_python is None:
        # The package provides no information
        return True
    requires_python_specifier = specifiers.SpecifierSet(requires_python)

    # We only use major.minor.micro
    python_version = version.parse('.'.join(map(str, sys.version_info[:3])))
    return python_version in requires_python_specifier


def get_metadata(dist):
    if (isinstance(dist, pkg_resources.DistInfoDistribution) and
            dist.has_metadata('METADATA')):
        return dist.get_metadata('METADATA')
    elif dist.has_metadata('PKG-INFO'):
        return dist.get_metadata('PKG-INFO')


def check_dist_requires_python(dist):
    metadata = get_metadata(dist)
    feed_parser = FeedParser()
    feed_parser.feed(metadata)
    pkg_info_dict = feed_parser.close()
    requires_python = pkg_info_dict.get('Requires-Python')
    try:
        if not check_requires_python(requires_python):
            raise exceptions.UnsupportedPythonVersion(
                "%s requires Python '%s' but the running Python is %s" % (
                    dist.project_name,
                    requires_python,
                    '.'.join(map(str, sys.version_info[:3])),)
            )
    except specifiers.InvalidSpecifier as e:
        logger.warning(
            "Package %s has an invalid Requires-Python entry %s - %s" % (
                dist.project_name, requires_python, e))
        return

Name	Size	Last Modified	Owner	Permissions
__pycache__	Dir	May 29 2024 3:41:23	root	0755
__init__.py	27.106 KB	April 06 2024 1:40:45	root	0644
appdirs.py	8.604 KB	April 06 2024 1:40:45	root	0644
build.py	1.281 KB	April 06 2024 1:40:45	root	0644
deprecation.py	2.18 KB	April 06 2024 1:40:45	root	0644
encoding.py	0.948 KB	April 06 2024 1:40:45	root	0644
filesystem.py	0.878 KB	April 06 2024 1:40:45	root	0644
glibc.py	2.87 KB	April 06 2024 1:40:45	root	0644
hashes.py	2.799 KB	April 06 2024 1:40:45	root	0644
logging.py	3.249 KB	April 06 2024 1:40:45	root	0644
outdated.py	5.849 KB	April 06 2024 1:40:45	root	0644
packaging.py	2.031 KB	April 06 2024 1:40:45	root	0644
setuptools_build.py	0.271 KB	April 06 2024 1:40:45	root	0644
ui.py	11.325 KB	April 06 2024 1:40:45	root	0644

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