同事在网上做题碰到的
>>> items = [0,1,2,3,4,5,6,7,8,9] >>> a = _____(2,4) >>> items[2:4] [2, 3] >>> items[a] [2, 3]
前段时间看cookbook刚好碰到过：slice对切片命名
a = slice(2,4)