#!/usr/bin/env python
# coding: utf-8

# In[ ]:


class SuperList(list):
    def __len__(self):
        return 1000
    
super_list1 = SuperList()
print(len(super_list1))
super_list1.append(5)
print(super_list1[0])
print(issubclass(SuperList, list))
print(issubclass(list, object))

