1.对于简单list结构
直接赋值只是简单的引用指向同一对象
而浅拷贝和深拷贝会指向不同的对象(简单结果浅拷贝和深拷贝的作用一样)
import copy a = [1,2,3,4,5] b = a c = a.copy() d = copy.deepcopy(a) print(a,b,c,d) # [1, 2, 3, 4, 5] [1, 2, 3, 4, 5] [1, 2, 3, 4, 5] [1, 2, 3, 4, 5] a.append(6) print(a,b,c,d) # [1, 2, 3, 4, 5, 6] [1, 2, 3, 4, 5, 6] [1, 2, 3, 4, 5] [1, 2, 3, 4, 5]
2.对于复杂的结构
https://www.runoob.com/w3cnote/python-understanding-dict-copy-shallow-or-deep.html