tryx[ __getitem__exceptprint('fail []'tryx __add__exceptprint('fail +'tryx(__call__(implicit via built-inexceptprint('fail ()' __call__(print( __str__()print(x__call__(explicitnot inherited__str__(explicitinherited from type__str__(implicit via built-inwhen run under python as coded__getattr__ does receive variety of implicit attribute fetches for built-in operationsbecause python looks up such attributes in instances normally conversely__getattribute__ is not run for any of the operator overloading names invoked by built-in operationsbecause such names are looked up in classes only in the new-style class modelc:\codepy - getattr-builtins py getattr==========================================getattrother __len__ getattr__getitem__ getattr__coerce__ getattr__add__ getattr__call__ getattr__call__ getattr__str__ [getattr strgetattr__str__ [getattr strgetattribute=====================================getattributeeggs getattributespam getattributeother __len__ fail [fail fail (getattribute__call__ getattribute__str__ [getattribute strnote how __getattr__ intercepts both implicit and explicit fetches of __call__ and __str__ in here by contrast__getattribute__ fails to catch implicit fetches of either attribute name for built-in operations __getattr__ and __getattribute__