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python3.11
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utils
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"""Stuff that differs in different Python versions and platform distributions.""" import importlib.resources import logging import os import sys from typing import IO __all__ = ["get_path_uid", "stdlib_pkgs", "WINDOWS"] logger = logging.getLogger(__name__) def has_tls() -> bool: try: import _ssl # noqa: F401 # ignore unused return True except ImportError: pass from pip._vendor.urllib3.util import IS_PYOPENSSL return IS_PYOPENSSL def get_path_uid(path: str) -> int: """ Return path's uid. Does not follow symlinks: https://github.com/pypa/pip/pull/935#discussion_r5307003 Placed this function in compat due to differences on AIX and Jython, that should eventually go away. :raises OSError: When path is a symlink or can't be read. """ if hasattr(os, "O_NOFOLLOW"): fd = os.open(path, os.O_RDONLY | os.O_NOFOLLOW) file_uid = os.fstat(fd).st_uid os.close(fd) else: # AIX and Jython # WARNING: time of check vulnerability, but best we can do w/o NOFOLLOW if not os.path.islink(path): # older versions of Jython don't have `os.fstat` file_uid = os.stat(path).st_uid else: # raise OSError for parity with os.O_NOFOLLOW above raise OSError(f"{path} is a symlink; Will not return uid for symlinks") return file_uid # The importlib.resources.open_text function was deprecated in 3.11 with suggested # replacement we use below. if sys.version_info < (3, 11): open_text_resource = importlib.resources.open_text else: def open_text_resource( package: str, resource: str, encoding: str = "utf-8", errors: str = "strict" ) -> IO[str]: return (importlib.resources.files(package) / resource).open( "r", encoding=encoding, errors=errors ) # packages in the stdlib that may have installation metadata, but should not be # considered 'installed'. this theoretically could be determined based on # dist.location (py27:`sysconfig.get_paths()['stdlib']`, # py26:sysconfig.get_config_vars('LIBDEST')), but fear platform variation may # make this ineffective, so hard-coding stdlib_pkgs = {"python", "wsgiref", "argparse"} # windows detection, covers cpython and ironpython WINDOWS = sys.platform.startswith("win") or (sys.platform == "cli" and os.name == "nt")
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