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: virtualenv.py

from __future__ import absolute_import

import io
import logging
import os
import re
import site
import sys

from pip._internal.utils.typing import MYPY_CHECK_RUNNING

if MYPY_CHECK_RUNNING:
    from typing import List, Optional

logger = logging.getLogger(__name__)
_INCLUDE_SYSTEM_SITE_PACKAGES_REGEX = re.compile(
    r"include-system-site-packages\s*=\s*(?P<value>true|false)"
)

def _running_under_venv():
    # type: () -> bool
    """Checks if sys.base_prefix and sys.prefix match.

This handles PEP 405 compliant virtual environments.
    """
    return sys.prefix != getattr(sys, "base_prefix", sys.prefix)

def _running_under_regular_virtualenv():
    # type: () -> bool
    """Checks if sys.real_prefix is set.

This handles virtual environments created with pypa's virtualenv.
    """
    # pypa/virtualenv case
    return hasattr(sys, 'real_prefix')

def running_under_virtualenv():
    # type: () -> bool
    """Return True if we're running inside a virtualenv, False otherwise.
    """
    return _running_under_venv() or _running_under_regular_virtualenv()

def _get_pyvenv_cfg_lines():
    # type: () -> Optional[List[str]]
    """Reads {sys.prefix}/pyvenv.cfg and returns its contents as list of lines

Returns None, if it could not read/access the file.
    """
    pyvenv_cfg_file = os.path.join(sys.prefix, 'pyvenv.cfg')
    try:
        # Although PEP 405 does not specify, the built-in venv module always
        # writes with UTF-8. (pypa/pip#8717)
        with io.open(pyvenv_cfg_file, encoding='utf-8') as f:
            return f.read().splitlines()  # avoids trailing newlines
    except IOError:
        return None

def _no_global_under_venv():
    # type: () -> bool
    """Check `{sys.prefix}/pyvenv.cfg` for system site-packages inclusion

PEP 405 specifies that when system site-packages are not supposed to be
    visible from a virtual environment, `pyvenv.cfg` must contain the following
    line:

include-system-site-packages = false

Additionally, log a warning if accessing the file fails.
    """
    cfg_lines = _get_pyvenv_cfg_lines()
    if cfg_lines is None:
        # We're not in a "sane" venv, so assume there is no system
        # site-packages access (since that's PEP 405's default state).
        logger.warning(
            "Could not access 'pyvenv.cfg' despite a virtual environment "
            "being active. Assuming global site-packages is not accessible "
            "in this environment."
        )
        return True

for line in cfg_lines:
        match = _INCLUDE_SYSTEM_SITE_PACKAGES_REGEX.match(line)
        if match is not None and match.group('value') == 'false':
            return True
    return False

def _no_global_under_regular_virtualenv():
    # type: () -> bool
    """Check if "no-global-site-packages.txt" exists beside site.py

This mirrors logic in pypa/virtualenv for determining whether system
    site-packages are visible in the virtual environment.
    """
    site_mod_dir = os.path.dirname(os.path.abspath(site.__file__))
    no_global_site_packages_file = os.path.join(
        site_mod_dir, 'no-global-site-packages.txt',
    )
    return os.path.exists(no_global_site_packages_file)

def virtualenv_no_global():
    # type: () -> bool
    """Returns a boolean, whether running in venv with no system site-packages.
    """
    # PEP 405 compliance needs to be checked first since virtualenv >=20 would
    # return True for both checks, but is only able to use the PEP 405 config.
    if _running_under_venv():
        return _no_global_under_venv()

if _running_under_regular_virtualenv():
        return _no_global_under_regular_virtualenv()

return False