fetch value as welldef __getattribute__(selfattr)if attr =' 'return object __getattribute__(self'value'* of coursethis still incurs call to the superclass methodbut not an additional recursive call before we get there add print calls to these methods to trace how and when they run __getattr__ and __getattribute__ compared to summarize the coding differences between __getattr__ and __getattribute__the following example uses both to implement three attributes--attr is class attributeattr is an instance attributeand attr is virtual managed attribute computed when fetchedclass getattrattr def __init__(self)self attr def __getattr__(selfattr)print('getattrif attr ='attr 'return elseraise attributeerror(attron undefined attrs only not on attr inherited from class not on attr stored on instance getattr(print( attr print( attr print( attr print('-'* class getattribute(object)(objectneeded in only attr def __init__(self)self attr def __getattribute__(selfattr)on all attr fetches print('getattruse superclass to avoid looping here if attr ='attr 'return elsereturn object __getattribute__(selfattrx getattribute(print( attr print( attr print( attr __getattr__ and __getattribute__