解包成元组在 Python 中有什么区别吗:
x, y, z = v
然后解包到一个列表中?
[x, y, z] = v
最佳答案
绝对没有,甚至是字节码(使用 dis
):
>>> def list_assign(args):
[x, y, z] = args
return x, y, z
>>> def tuple_assign(args):
x, y, z = args
return x, y, z
>>> import dis
>>> dis.dis(list_assign)
2 0 LOAD_FAST 0 (args)
3 UNPACK_SEQUENCE 3
6 STORE_FAST 1 (x)
9 STORE_FAST 2 (y)
12 STORE_FAST 3 (z)
3 15 LOAD_FAST 1 (x)
18 LOAD_FAST 2 (y)
21 LOAD_FAST 3 (z)
24 BUILD_TUPLE 3
27 RETURN_VALUE
>>> dis.dis(tuple_assign)
2 0 LOAD_FAST 0 (args)
3 UNPACK_SEQUENCE 3
6 STORE_FAST 1 (x)
9 STORE_FAST 2 (y)
12 STORE_FAST 3 (z)
3 15 LOAD_FAST 1 (x)
18 LOAD_FAST 2 (y)
21 LOAD_FAST 3 (z)
24 BUILD_TUPLE 3
27 RETURN_VALUE
关于python - 解包到列表中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23831243/