我有以下代码
mylst
是一个嵌套列表:
mylst = [[507, 3, 30, 44, 522, 25],
[268, 40, 23, 54, 280, 67],
[424, 37, 28, 50, 438, 62],
[216, 47, 24, 50, 228, 72],
[562, 54, 23, 54, 574, 81],
[445, 63, 24, 59, 457, 93],
[217, 100, 23, 69, 229, 135],
[565, 115, 29, 65, 580, 148],
[596, 113, 22, 67, 607, 147]]
lst1 = mylst[4:6][:]
lst2 = mylst[:][4:6]
奇怪的事情,我为lst1和lst2变量获得了相同的输出:
print(lst1)
[[562, 54, 23, 54, 574, 81], [445, 63, 24, 59, 457, 93]]
print(lst2)
[[562, 54, 23, 54, 574, 81], [445, 63, 24, 59, 457, 93]]
怎么可能一样?