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ðŸ“„ __init__.py(0 B)
ðŸ“ __pycache__
ðŸ“„ _jaraco_text.py(3.27 KB)
ðŸ“„ _log.py(1015 B)
ðŸ“„ appdirs.py(1.67 KB)
ðŸ“„ compat.py(2.34 KB)
ðŸ“„ compatibility_tags.py(6.51 KB)
ðŸ“„ datetime.py(241 B)
ðŸ“„ deprecation.py(3.62 KB)
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ðŸ“„ egg_link.py(2.41 KB)
ðŸ“„ entrypoints.py(3.25 KB)
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ðŸ“„ filetypes.py(715 B)
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ðŸ“„ misc.py(22.9 KB)
ðŸ“„ packaging.py(1.57 KB)
ðŸ“„ retry.py(1.36 KB)
ðŸ“„ setuptools_build.py(4.38 KB)
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ðŸ“„ temp_dir.py(9.09 KB)
ðŸ“„ unpacking.py(11.65 KB)
ðŸ“„ urls.py(1.56 KB)
ðŸ“„ virtualenv.py(3.38 KB)
ðŸ“„ wheel.py(4.39 KB)

Editing: packaging.py

import functools
import logging
from typing import Optional, Tuple

from pip._vendor.packaging import specifiers, version
from pip._vendor.packaging.requirements import Requirement

logger = logging.getLogger(__name__)

@functools.lru_cache(maxsize=32)
def check_requires_python(
    requires_python: Optional[str], version_info: Tuple[int, ...]
) -> bool:
    """
    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.
    """
    if requires_python is None:
        # The package provides no information
        return True
    requires_python_specifier = specifiers.SpecifierSet(requires_python)

python_version = version.parse(".".join(map(str, version_info)))
    return python_version in requires_python_specifier

@functools.lru_cache(maxsize=10000)
def get_requirement(req_string: str) -> Requirement:
    """Construct a packaging.Requirement object with caching"""
    # Parsing requirement strings is expensive, and is also expected to happen
    # with a low diversity of different arguments (at least relative the number
    # constructed). This method adds a cache to requirement object creation to
    # minimize repeated parsing of the same string to construct equivalent
    # Requirement objects.
    return Requirement(req_string)

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