3.2.1.11. sphinx.ext.autodoc.is_builtin_class_method

sphinx.ext.autodoc.is_builtin_class_method(obj, attr_name)

If attr_name is implemented at builtin class, return True.

>>> is_builtin_class_method(int, '__init__')
True

Why this function needed? CPython implements int.__init__ by Descriptor but PyPy implements it by pure Python code.