python 浅拷贝和深度拷贝

1.

  

list = [1, 2, [3, 4]]

a = copy.copy(list)

b = copy.deepcopy(list)
list[0] = 10
list[2][0] = 5
print(list, id(list))
print(a, id(a))

print(b, id(b))