1
00:00:00,000 --> 00:00:04,000
本次测验的题目是求运行三句代码后

2
00:00:04,000 --> 00:00:07,000
len[p]即p的长度

3
00:00:07,000 --> 00:00:09,000
这道题比上一题略难

4
00:00:09,000 --> 00:00:13,000
大家尝试一下是否能自行解答

5
00:00:13,000 --> 00:00:17,000
当然 如果你想在python中运行一下代码也是可以的

6
00:00:17,000 --> 00:00:20,000
但我还是希望大家自己解答