python 元组补充

#!/usr/bin/env python
# -*- coding: UTF-8 -*-

# 元组的元素不可被修改，but元组的元素的元素可被修改
t = (11, 22, ['alex', {"k1":"v1"}])
print(t)
t[2].append("xxx")
print(t)

C:UsersttlopAppDataLocalProgramsPythonPython36python.exe C:/Users/ttlop/PycharmProjects/q1_day2/c10.py
(11, 22, ['alex', {'k1': 'v1'}])
(11, 22, ['alex', {'k1': 'v1'}, 'xxx'])