深浅拷贝概述：
浅拷贝：只拷贝一层；
深拷贝：相当于克隆一份；
import copy husband = ['xiaohu',123,[15000,9000]] wife =husband.copy() wife[0] = 'xiaopang' wife[1] =345 print(wife) ['xiaopang', 345, [15000, 9000]] xiaosan =copy.deepcopy(husband) xiaosan[0] = 'xiaojin' xiaosan[1] = 668 xiaosan[2][1] -= 1999 print(xiaosan) ['xiaojin', 668, [15000, 7001]]