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?? __init__.py(10.16 KB)
?? __pycache__
?? _core_metadata.py(11.7 KB)
?? _distutils
?? _entry_points.py(2.26 KB)
?? _imp.py(2.38 KB)
?? _importlib.py(223 B)
?? _itertools.py(657 B)
?? _normalization.py(5.69 KB)
?? _path.py(2.62 KB)
?? _reqs.py(1.4 KB)
?? _shutil.py(1.46 KB)
?? _static.py(4.74 KB)
?? _vendor
?? archive_util.py(7.18 KB)
?? build_meta.py(19.97 KB)
?? cli-32.exe(11.5 KB)
?? cli-64.exe(14 KB)
?? cli-arm64.exe(13.5 KB)
?? cli.exe(11.5 KB)
?? command
?? compat
?? config
?? depends.py(5.83 KB)
?? discovery.py(20.76 KB)
?? dist.py(43.84 KB)
?? errors.py(2.95 KB)
?? extension.py(6.53 KB)
?? glob.py(5.92 KB)
?? gui-32.exe(11.5 KB)
?? gui-64.exe(14 KB)
?? gui-arm64.exe(13.5 KB)
?? gui.exe(11.5 KB)
?? installer.py(4.99 KB)
?? launch.py(820 B)
?? logging.py(1.23 KB)
?? modified.py(568 B)
?? monkey.py(3.63 KB)
?? msvc.py(40.66 KB)
?? namespaces.py(3.1 KB)
?? package_index.py(38.18 KB)
?? sandbox.py(14.56 KB)
?? script (dev).tmpl(218 B)
?? script.tmpl(138 B)
?? tests
?? unicode_utils.py(3.11 KB)
?? version.py(161 B)
?? warnings.py(3.71 KB)
?? wheel.py(8.42 KB)
?? windows_support.py(726 B)

Editing: _reqs.py

from __future__ import annotations

from collections.abc import Iterable, Iterator
from functools import lru_cache
from typing import TYPE_CHECKING, Callable, TypeVar, Union, overload

import jaraco.text as text
from packaging.requirements import Requirement

if TYPE_CHECKING:
    from typing_extensions import TypeAlias

_T = TypeVar("_T")
_StrOrIter: TypeAlias = Union[str, Iterable[str]]

parse_req: Callable[[str], Requirement] = lru_cache()(Requirement)
# Setuptools parses the same requirement many times
# (e.g. first for validation than for normalisation),
# so it might be worth to cache.

def parse_strings(strs: _StrOrIter) -> Iterator[str]:
    """
    Yield requirement strings for each specification in `strs`.

`strs` must be a string, or a (possibly-nested) iterable thereof.
    """
    return text.join_continuation(map(text.drop_comment, text.yield_lines(strs)))

# These overloads are only needed because of a mypy false-positive, pyright gets it right
# https://github.com/python/mypy/issues/3737
@overload
def parse(strs: _StrOrIter) -> Iterator[Requirement]: ...
@overload
def parse(strs: _StrOrIter, parser: Callable[[str], _T]) -> Iterator[_T]: ...
def parse(strs: _StrOrIter, parser: Callable[[str], _T] = parse_req) -> Iterator[_T]:  # type: ignore[assignment]
    """
    Replacement for ``pkg_resources.parse_requirements`` that uses ``packaging``.
    """
    return map(parser, parse_strings(strs))

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