Feb 2, 2026 · Feb 9, 2024 · Feb 10, 2024 · Feb 10, 2024 · Feb 11, 2024 · Feb 11, 2024
diff --git a/Lib/test/test_funcattrs.py b/Lib/test/test_funcattrs.py
    # XXX Not sure where this should really go since I can't find a
    # test module specifically for builtin_function_or_method.

    def test_builtin__module__(self):
        import math

        # builtin function:
        self.assertEqual(len.__module__, 'builtins')
        self.assertEqual(math.sin.__module__, 'math')

        # instance method:
        self.assertRaises(AttributeError, getattr, int.to_bytes, '__module__')
        self.assertEqual(int.to_bytes.__objclass__.__module__, 'builtins')

        # builtin classmethod:
        self.assertEqual(int.from_bytes.__module__, None)
        self.assertEqual(int.from_bytes.__self__.__module__, 'builtins')

        # builtin staticmethod:
        self.assertEqual(bytes.maketrans.__module__, 'builtins')

    def test_builtin__qualname__(self):
        import time

diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-02-10-05-42-26.gh-issue-115231.6T7dzi.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-02-10-05-42-26.gh-issue-115231.6T7dzi.rst
 Setup ``__module__`` attribute for built-in static methods.  Patch by Sergey
 B Kirpichev.
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
        descr = PyDescr_NewClassMethod(type, meth);
    }
    else if (meth->ml_flags & METH_STATIC) {
        PyObject *cfunc = PyCFunction_NewEx(meth, (PyObject*)type, NULL);
        PyObject *mod = type_module(type);
        if (mod == NULL) {
            if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
                return -1;
            }
            PyErr_Clear();
        }
        PyObject *cfunc = PyCFunction_NewEx(meth, (PyObject*)type, mod);
        Py_XDECREF(mod);
        if (cfunc == NULL) {
            return -1;
        }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -459,6 +459,24 @@ class BuiltinFunctionPropertiesTest(unittest.TestCase):
		# XXX Not sure where this should really go since I can't find a
		# test module specifically for builtin_function_or_method.

		def test_builtin__module__(self):
		import math
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		# builtin function:
		self.assertEqual(len.__module__, 'builtins')
		self.assertEqual(math.sin.__module__, 'math')

		# instance method:
		self.assertRaises(AttributeError, getattr, int.to_bytes, '__module__')
		self.assertEqual(int.to_bytes.__objclass__.__module__, 'builtins')

		# builtin classmethod:
		self.assertEqual(int.from_bytes.__module__, None)
		self.assertEqual(int.from_bytes.__self__.__module__, 'builtins')
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		# builtin staticmethod:
		self.assertEqual(bytes.maketrans.__module__, 'builtins')

		def test_builtin__qualname__(self):
		import time

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Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		Setup ``__module__`` attribute for built-in static methods. Patch by Sergey
		B Kirpichev.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -8361,7 +8361,15 @@ type_add_method(PyTypeObject type, PyMethodDef meth)
		descr = PyDescr_NewClassMethod(type, meth);
		}
		else if (meth->ml_flags & METH_STATIC) {
		PyObject cfunc = PyCFunction_NewEx(meth, (PyObject)type, NULL);
		PyObject *mod = type_module(type);
		if (mod == NULL) {
		if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
		return -1;
		}
		PyErr_Clear();
		}
		PyObject cfunc = PyCFunction_NewEx(meth, (PyObject)type, mod);
		Py_XDECREF(mod);
		if (cfunc == NULL) {
		return -1;
		}
Expand Down