Python 深浅copy

#!/usr/bin/env python3import copy

#copy 有两种#浅copy#copy.copy()

#深copy#copy.deepcopy()

‘‘‘#########################                      ##   字符串于数字的copy   ##                      #########################

#内存地址相同,字符串于数字的copy永远都是用的内存中的唯一的地址#a = 123123#b = 123123#print(id(a))#print(id(b))

#a1 = 123123#b1 = copy.copy(a1)#print(id(b1))

a2 = 123123b2 = copy.deepcopy(a2)print(id(a2))‘‘‘

#其他，元组、列表、字典的copy

dic = {‘name‘:‘andy‘,‘age‘:18,‘job‘:‘IT‘,‘pro‘:[1,2,3,4,5]}#浅copydic2 = copy.copy(dic)print(dic)print(id(dic))print(dic2)print(id(dic2))

#深copydic2 = copy.deepcopy(dic)print(dic)print(id(dic))print(dic2)print(id(dic2))

#实例，网络模版#假设如下是网络模版，有很多机器都要使用，重复创建太傻了，所以就用到了copy

#浅copy会出错，把不需要修改数据已经修改了，会连同模版一起修改掉ds = {    ‘cup‘:[80,],    ‘mem‘:[80,],    ‘disk‘:[80,]}#print(‘浅copy‘)# print(ds)# new_ds = copy.copy(ds)# new_ds[‘cup‘][0] = 50# print(new_ds)# print(ds)

#深copy只修改需要的数据，不会对模版造成影响print(‘深copy‘)print(ds)new_ds = copy.deepcopy(ds)new_ds[‘cup‘][0] = 50print(new_ds)print(ds)