https://github.com/python/cpython/commit/1818fba7e737320b4241fdde095146a4c52c0e63
commit: 1818fba7e737320b4241fdde095146a4c52c0e63
branch: main
author: Victor Stinner <[email protected]>
committer: vstinner <[email protected]>
date: 2026-10-06T23:03:46+02:00
summary:

Use _testlimitedcapi in test_free_threading.test_capi (#158935)

Replace ctypes with _testlimitedcapi. ctypes is not always available,
and _testlimitedcapi is a thin wrapper to the C API.

Skip the test if _testlimitedcapi is missing.

files:
M Lib/test/test_free_threading/test_capi.py

diff --git a/Lib/test/test_free_threading/test_capi.py 
b/Lib/test/test_free_threading/test_capi.py
index b0be94629af009..36021eb33d5900 100644
--- a/Lib/test/test_free_threading/test_capi.py
+++ b/Lib/test/test_free_threading/test_capi.py
@@ -1,14 +1,12 @@
-import ctypes.util
 import sys
 import unittest
 
+from test.support import import_helper
 from test.support import threading_helper
 from test.support.threading_helper import run_concurrently
 
-
[email protected]_dll_function(ctypes.pythonapi)
-def PyImport_AddModuleRef(name: ctypes.c_char_p) -> ctypes.py_object:
-    pass
+# Skip the test if the extension is missing
+_testlimitedcapi = import_helper.import_module('_testlimitedcapi')
 
 
 @threading_helper.requires_working_threading()
@@ -20,6 +18,7 @@ def test_pyimport_addmoduleref_thread_safe(self):
         NUM_ITERS = 10
         NTHREADS = 4
 
+        PyImport_AddModuleRef = _testlimitedcapi.PyImport_AddModuleRef
         module_name = f"test_free_threading_addmoduleref_{id(self)}"
         module_name_bytes = module_name.encode()
         sys.modules.pop(module_name, None)

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