what is the difference between commenting and uncommenting the __init__ method in this class?

[iMath]

what is the difference between commenting and uncommenting the __init__ method  in this class?


class CounterList(list):
    counter = 0

##    def __init__(self, *args):
##        super(CounterList, self).__init__(*args)
    
    def __getitem__(self, index):
        
        self.__class__.counter += 1
        return super(CounterList, self).__getitem__(index)