#!/usr/bin/python3
list = ['physics', 'chemistry', 1997, 2000]
print ("Value available at index 2 : ", list[2])
list[2] = 2001
print ("New value available at index 2 : ", list[2])本文转自：http://codingdict.com/article/6513
原文：https://www.cnblogs.com/bczd/p/12106785.html