Issue #20189: Four additional builtin types (PyTypeObject,

PyMethodDescr_Type, _PyMethodWrapper_Type, and PyWrapperDescr_Type)
have been modified to provide introspection information for builtins.
Also: many additional Lib, test suite, and Argument Clinic fixes.

Python/bltinmodule.c

@@ -1325,7 +1325,7 @@ builtin_len(PyObject *self, PyObject *v)
 }
 
 PyDoc_STRVAR(len_doc,
-"len(object) -> integer\n\
+"len(module, object)\n\
 \n\
 Return the number of items of a sequence or mapping.");