python浅いコピーと深いコピー

import copy
husband=['xiaohu',123,[15000,9000]]

wife=husband.copy()   #   ，wife=copy.copy(husband)，      ，           ，         
wife[0]="xiaopang"
wife[1]=345
husband[2][1]=3000 #    6000
print(wife,husband)

xiaosan=copy.deepcopy(husband)  #   ，             ，     ，      ，
xiaosan[0]='jinxing'
xiaosan[1]=666
xiaosan[2][1] =7000

xiaomei=wife   #       ，     
xiaomei[0]='meimei'
xiaomei[2][1]=100
print(xiaomei,wife)