https://github.com/python/cpython/commit/3440ff9fd15a8bc4b3aa7d45dd43cebe065f6cfd commit: 3440ff9fd15a8bc4b3aa7d45dd43cebe065f6cfd branch: 3.15 author: Miss Islington (bot) <[email protected]> committer: serhiy-storchaka <[email protected]> date: 2026-10-10T13:36:31+03:00 summary:
[3.15] gh-81241: Fix importing `ctypes` from statically linked interpreters (GH-153890) (GH-158307) See astral-sh/python-build-standalone#873. (cherry picked from commit 5637f4e38a68cd015daa25cce91e902c01c1279b) Co-authored-by: Peter Bierma <[email protected]> files: A Misc/NEWS.d/next/Library/2026-07-18-04-09-44.gh-issue-81241.gGRbBr.rst M Doc/library/ctypes.rst M Lib/ctypes/__init__.py diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst index 53b05cfd66f2596..cc573936e4f4a67 100644 --- a/Doc/library/ctypes.rst +++ b/Doc/library/ctypes.rst @@ -1713,6 +1713,10 @@ These prefabricated library loaders are available: :c:expr:`int`, which is of course not always the truth, so you have to assign the correct :attr:`!restype` attribute to use these functions. + .. note:: + + If the Python interpreter is statically linked, this may be ``None``. + .. audit-event:: ctypes.dlopen name ctypes.LibraryLoader Loading a library through any of these objects raises an diff --git a/Lib/ctypes/__init__.py b/Lib/ctypes/__init__.py index 0b84a27f8c6d613..0aebd5877d4a9dc 100644 --- a/Lib/ctypes/__init__.py +++ b/Lib/ctypes/__init__.py @@ -553,7 +553,10 @@ def LoadLibrary(self, name): # These are Unix-like platforms which use a dynamically-linked libpython. pythonapi = PyDLL(_sysconfig.get_config_var("LDLIBRARY")) else: - pythonapi = PyDLL(None) + try: + pythonapi = PyDLL(None) + except OSError: + pythonapi = None if _os.name == "nt": diff --git a/Misc/NEWS.d/next/Library/2026-07-18-04-09-44.gh-issue-81241.gGRbBr.rst b/Misc/NEWS.d/next/Library/2026-07-18-04-09-44.gh-issue-81241.gGRbBr.rst new file mode 100644 index 000000000000000..6110b7404a811e4 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2026-07-18-04-09-44.gh-issue-81241.gGRbBr.rst @@ -0,0 +1,2 @@ +Fix :exc:`OSError` when importing :mod:`ctypes` from a statically linked +interpreter. _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]
