浅拷贝可以拿丈夫与媳妇公用一张银行卡来举例 # python>>> husband = ['liang',123,[10000,6000]] #丈夫的银行卡信息(姓名,id,额度,余额)>>> wife = husband.copy() #媳妇和丈夫公用一张银行卡(姓名与id不同,但是额度与余额相同)>>> wife[0] = 'yue'>>> wife[1] = 456>>> wife[2][1] -= 3000 #媳妇花费3000>>> wife['yue', 456, [10000, 3000]] #显示媳妇余额>>> husband['liang', 123, [10000, 3000]] #显示丈夫余额
浅拷贝只是拷贝第一层,深拷贝相当于克隆,深拷贝如下:
引入了小三,小三花费的钱媳妇不知道:>>> liang = ['xin',111,[15000,10000]]>>> yue = liang.copy()>>> yue['xin', 111, [15000, 10000]]>>> yue[0] = 'mumu'>>> yue[1] = 222>>> yue[2][1] -= 5000>>> yue['mumu', 222, [15000, 5000]]>>> liang['xin', 111, [15000, 5000]]以上是浅拷贝;以下是深拷贝:>>> import copy>>> xiaosan = copy.deepcopy(liang)>>> xiaosan[0] ="**">>> xiaosan[1] = 333>>> xiaosan[2][1] -= 1999>>> xiaosan['**', 333, [15000, 3001]] #已经减少啦>>> liang['xin', 111, [15000, 5000]]>>> yue['mumu', 222, [15000, 5000]] #媳妇不知道