my_list = [1,2,3] # mutable my_tuple = (1,2,3) # immutable my_clsobj = myclass(foo=1, bar=2) # mutable my_namedt = mynamedt(foo=1, bar=2) # immutable my_list[0] # 1 my_tuple[0] # 1 my_clsobj.foo # 1 my_namedt.foo # 1