How to constrain Python using its advanced options

StrictList

# What if there was an option 
# to disable the ability for lists
# to respond to index -1?

from collections import UserList

class StrictList(UserList):
    '''List that does not allow index < 0'''
    
    def __getitem__(self, index):
        if index < 0:
            raise IndexError('index < 0 is not allowed')
        else:
            return super().__getitem__(index)