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/
venv
/lib
/python3.11
/site-packages
/pip
/_internal
/utils
/entrypoints.py
import itertools | |
import os | |
import shutil | |
import sys | |
from typing import List, Optional | |
from pip._internal.cli.main import main | |
from pip._internal.utils.compat import WINDOWS | |
_EXECUTABLE_NAMES = [ | |
"pip", | |
f"pip{sys.version_info.major}", | |
f"pip{sys.version_info.major}.{sys.version_info.minor}", | |
] | |
if WINDOWS: | |
_allowed_extensions = {"", ".exe"} | |
_EXECUTABLE_NAMES = [ | |
"".join(parts) | |
for parts in itertools.product(_EXECUTABLE_NAMES, _allowed_extensions) | |
] | |
def _wrapper(args: Optional[List[str]] = None) -> int: | |
"""Central wrapper for all old entrypoints. | |
Historically pip has had several entrypoints defined. Because of issues | |
arising from PATH, sys.path, multiple Pythons, their interactions, and most | |
of them having a pip installed, users suffer every time an entrypoint gets | |
moved. | |
To alleviate this pain, and provide a mechanism for warning users and | |
directing them to an appropriate place for help, we now define all of | |
our old entrypoints as wrappers for the current one. | |
""" | |
sys.stderr.write( | |
"WARNING: pip is being invoked by an old script wrapper. This will " | |
"fail in a future version of pip.\n" | |
"Please see https://github.com/pypa/pip/issues/5599 for advice on " | |
"fixing the underlying issue.\n" | |
"To avoid this problem you can invoke Python with '-m pip' instead of " | |
"running pip directly.\n" | |
) | |
return main(args) | |
def get_best_invocation_for_this_pip() -> str: | |
"""Try to figure out the best way to invoke pip in the current environment.""" | |
binary_directory = "Scripts" if WINDOWS else "bin" | |
binary_prefix = os.path.join(sys.prefix, binary_directory) | |
# Try to use pip[X[.Y]] names, if those executables for this environment are | |
# the first on PATH with that name. | |
path_parts = os.path.normcase(os.environ.get("PATH", "")).split(os.pathsep) | |
exe_are_in_PATH = os.path.normcase(binary_prefix) in path_parts | |
if exe_are_in_PATH: | |
for exe_name in _EXECUTABLE_NAMES: | |
found_executable = shutil.which(exe_name) | |
binary_executable = os.path.join(binary_prefix, exe_name) | |
if ( | |
found_executable | |
and os.path.exists(binary_executable) | |
and os.path.samefile( | |
found_executable, | |
binary_executable, | |
) | |
): | |
return exe_name | |
# Use the `-m` invocation, if there's no "nice" invocation. | |
return f"{get_best_invocation_for_this_python()} -m pip" | |
def get_best_invocation_for_this_python() -> str: | |
"""Try to figure out the best way to invoke the current Python.""" | |
exe = sys.executable | |
exe_name = os.path.basename(exe) | |
# Try to use the basename, if it's the first executable. | |
found_executable = shutil.which(exe_name) | |
if found_executable and os.path.samefile(found_executable, exe): | |
return exe_name | |
# Use the full executable name, because we couldn't find something simpler. | |
return exe | |