Consider this piece of code: from collections.abc import Sequence print(issubclass(list, Sequence)) # Output: True print(list.__mro__) # Output: (<class 'list'>, <class 'object'>) print(list.__bases__) # Output: (<class 'object'>,) As you can see, the first print statement establishes that list is indeed a subclass of Sequence, but when I try to enumerate its superclasses using __mro__ or __bases__, I only get object as the superclass which means there are no more superclasses higher up. Why don't __bases__ and __mro__ list Sequence as a parent class when it actually is? Continue reading...
