list[：10] 和list[::10]的区别

list=range(100)
#正着切片
>>> list[:10]
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
#负索引切片
 list[-10:]
[90, 91, 92, 93, 94, 95, 96, 97, 98, 99]
#倒着切片
>>> list[10:0:-1]
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
>>> list[-1:-10:-1]
[99, 98, 97, 96, 95, 94, 93, 92, 91]
#跳着切片
>>> list[::10]
[0, 10, 20, 30, 40, 50, 60, 70, 80, 90]