pythongh-99433: Fix doctest failure on types.MethodWrapperType (p…

…ythonGH-99434)

(cherry picked from commit 79c10b7)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

Lib/doctest.py

@@ -956,7 +956,8 @@ def _from_module(self, module, object):
             return module is inspect.getmodule(object)
         elif inspect.isfunction(object):
             return module.__dict__ is object.__globals__
-        elif inspect.ismethoddescriptor(object):
+        elif (inspect.ismethoddescriptor(object) or
+              inspect.ismethodwrapper(object)):
             if hasattr(object, '__objclass__'):
                 obj_mod = object.__objclass__.__module__
             elif hasattr(object, '__module__'):

Lib/test/doctest_lineno.py

@@ -48,3 +48,6 @@ def method_with_doctest(self):
         >>> MethodWrapper.method_with_doctest.__name__
         'method_with_doctest'
         """
+
+# https://github.com/python/cpython/issues/99433
+str_wrapper = object().__str__

Misc/NEWS.d/next/Library/2022-11-13-15-32-19.gh-issue-99433.Ys6y0A.rst

@@ -0,0 +1 @@
+Fix :mod:`doctest` failure on :class:`types.MethodWrapperType` in modules.