3.2 The standard type hierarchy
davis.lbl.gov › Manuals › PYTHON-2Dec 19, 2003 · See section 3.3.2 for another way in which attributes of a class retrieved via its instances may differ from the objects actually stored in the class's __dict__. If no class attribute is found, and the object's class has a __getattr__() method, that is called to satisfy the lookup.