Python 中的浅拷贝和深拷贝

import copy

list1 = [1,2,3,[4,5,[6,7,8]]]

# 浅拷贝
list2 = list1
list3 = list1[:]
list4 = list1.copy()

# 深拷贝
list5 = copy.deepcopy(list1)