venv/lib/python3.11/site-packages/pip/__pip-runner__.py

   1 """Execute exactly this copy of pip, within a different environment.
   2
   3 This file is named as it is, to ensure that this module can't be imported via
   4 an import statement.
   5 """
   6
   7 # /!\ This version compatibility check section must be Python 2 compatible. /!\
   8
   9 import sys
  10
  11 # Copied from setup.py
  12 PYTHON_REQUIRES = (3, 7)
  13
  14
  15 def version_str(version):  # type: ignore
  16     return ".".join(str(v) for v in version)
  17
  18
  19 if sys.version_info[:2] < PYTHON_REQUIRES:
  20     raise SystemExit(
  21         "This version of pip does not support python {} (requires >={}).".format(
  22             version_str(sys.version_info[:2]), version_str(PYTHON_REQUIRES)
  23         )
  24     )
  25
  26 # From here on, we can use Python 3 features, but the syntax must remain
  27 # Python 2 compatible.
  28
  29 import runpy  # noqa: E402
  30 from importlib.machinery import PathFinder  # noqa: E402
  31 from os.path import dirname  # noqa: E402
  32
  33 PIP_SOURCES_ROOT = dirname(dirname(__file__))
  34
  35
  36 class PipImportRedirectingFinder:
  37     @classmethod
  38     def find_spec(self, fullname, path=None, target=None):  # type: ignore
  39         if fullname != "pip":
  40             return None
  41
  42         spec = PathFinder.find_spec(fullname, [PIP_SOURCES_ROOT], target)
  43         assert spec, (PIP_SOURCES_ROOT, fullname)
  44         return spec
  45
  46
  47 sys.meta_path.insert(0, PipImportRedirectingFinder())
  48
  49 assert __name__ == "__main__", "Cannot run __pip-runner__.py as a non-main module"
  50 runpy.run_module("pip", run_name="__main__", alter_sys=True)