class SpecialList:
 
    def __init__(self, data):
        self.__data = data
 
    def __len__(self):  # JUST LOOK AT THIS LINE
        return 50


l1 = SpecialList([1,40,30,100,30,1,2,3,4])
l2 = SpecialList([1,3,4,5]) 

print(len(l1)) #50
print(len(l2)) #50


