这个为啥匹配是空呢？

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This topic created in 3029 days ago, the information mentioned may be changed or developed.

for i in range(1,10): s.append(i)

s [1, 2, 3, 4, 5, 6, 7, 8, 9] for i in range(-1,-3): s.remove(s[i])

s [1, 2, 3, 4, 5, 6, 7, 8, 9]

2 replies

ddzzhen

Jul 28, 2018 via Android

-1,-3 ？
删除主要是 pop 吧

xpresslink

Jul 28, 2018

range(-1,-3) 必须要写成 range(-1, -3，-1)，或 range(-2, 0)