golden hour

/opt/alt/python37/lib/python3.7/site-packages/pip/_internal/utils

File/Folder	Size	Actions
__init__.py	0 B
__init__.pyc	164 B
__init__.pyo	164 B
__pycache__	-
appdirs.py	1.32 KB
appdirs.pyc	1.78 KB
appdirs.pyo	1.78 KB
compat.py	9.27 KB
compat.pyc	8.62 KB
compat.pyo	8.62 KB
compatibility_tags.py	5.31 KB
compatibility_tags.pyc	4.45 KB
compatibility_tags.pyo	4.45 KB
datetime.py	295 B
datetime.pyc	625 B
datetime.pyo	625 B
deprecation.py	3.24 KB
deprecation.pyc	3.44 KB
deprecation.pyo	3.44 KB
direct_url_helpers.py	4.26 KB
direct_url_helpers.pyc	3.37 KB
direct_url_helpers.pyo	3.24 KB
distutils_args.py	1.32 KB
distutils_args.pyc	1.6 KB
distutils_args.pyo	1.6 KB
encoding.py	1.25 KB
encoding.pyc	1.61 KB
encoding.pyo	1.56 KB
entrypoints.py	1.19 KB
entrypoints.pyc	1.47 KB
entrypoints.pyo	1.47 KB
filesystem.py	6.78 KB
filesystem.pyc	7.4 KB
filesystem.pyo	7.35 KB
filetypes.py	571 B
filetypes.pyc	792 B
filetypes.pyo	792 B
glibc.py	3.22 KB
glibc.pyc	2.19 KB
glibc.pyo	2.19 KB
hashes.py	4.57 KB
hashes.pyc	5.68 KB
hashes.pyo	5.68 KB
inject_securetransport.py	810 B
inject_securetransport.pyc	1.07 KB
inject_securetransport.pyo	1.07 KB
logging.py	12.79 KB
logging.pyc	11.6 KB
logging.pyo	11.6 KB
misc.py	27.67 KB
misc.pyc	32.2 KB
misc.pyo	32.2 KB
models.py	1.17 KB
models.pyc	2.55 KB
models.pyo	2.55 KB
packaging.py	2.96 KB
packaging.pyc	3.27 KB
packaging.pyo	3.27 KB
parallel.py	3.32 KB
parallel.pyc	3.62 KB
parallel.pyo	3.62 KB
pkg_resources.py	1.22 KB
pkg_resources.pyc	2.39 KB
pkg_resources.pyo	2.39 KB
setuptools_build.py	4.94 KB
setuptools_build.pyc	3.83 KB
setuptools_build.pyo	3.75 KB
subprocess.py	9.69 KB
subprocess.pyc	6.77 KB
subprocess.pyo	6.69 KB
temp_dir.py	8.18 KB
temp_dir.pyc	8.75 KB
temp_dir.pyo	8.62 KB
typing.py	1.37 KB
typing.pyc	1.52 KB
typing.pyo	1.52 KB
unpacking.py	9.27 KB
unpacking.pyc	7.83 KB
unpacking.pyo	7.79 KB
urls.py	1.49 KB
urls.pyc	1.94 KB
urls.pyo	1.8 KB
virtualenv.py	3.62 KB
virtualenv.pyc	4.11 KB
virtualenv.pyo	4.11 KB
wheel.py	7.13 KB
wheel.pyc	7.27 KB
wheel.pyo	7.27 KB

Edit: packaging.py

from __future__ import absolute_import

import logging
from email.parser import FeedParser

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

from pip._internal.exceptions import NoneMetadataError
from pip._internal.utils.misc import display_path
from pip._internal.utils.typing import MYPY_CHECK_RUNNING

if MYPY_CHECK_RUNNING:
    from typing import Optional, Tuple
    from email.message import Message
    from pip._vendor.pkg_resources import Distribution

logger = logging.getLogger(__name__)

def check_requires_python(requires_python, version_info):
    # type: (Optional[str], 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

def get_metadata(dist):
    # type: (Distribution) -> Message
    """
    :raises NoneMetadataError: if the distribution reports `has_metadata()`
        True but `get_metadata()` returns None.
    """
    metadata_name = 'METADATA'
    if (isinstance(dist, pkg_resources.DistInfoDistribution) and
            dist.has_metadata(metadata_name)):
        metadata = dist.get_metadata(metadata_name)
    elif dist.has_metadata('PKG-INFO'):
        metadata_name = 'PKG-INFO'
        metadata = dist.get_metadata(metadata_name)
    else:
        logger.warning("No metadata found in %s", display_path(dist.location))
        metadata = ''

if metadata is None:
        raise NoneMetadataError(dist, metadata_name)

feed_parser = FeedParser()
    # The following line errors out if with a "NoneType" TypeError if
    # passed metadata=None.
    feed_parser.feed(metadata)
    return feed_parser.close()

def get_requires_python(dist):
    # type: (pkg_resources.Distribution) -> Optional[str]
    """
    Return the "Requires-Python" metadata for a distribution, or None
    if not present.
    """
    pkg_info_dict = get_metadata(dist)
    requires_python = pkg_info_dict.get('Requires-Python')

if requires_python is not None:
        # Convert to a str to satisfy the type checker, since requires_python
        # can be a Header object.
        requires_python = str(requires_python)

return requires_python

def get_installer(dist):
    # type: (Distribution) -> str
    if dist.has_metadata('INSTALLER'):
        for line in dist.get_metadata_lines('INSTALLER'):
            if line.strip():
                return line.strip()
    return ''