[解决方案] pythonchallenge level 3

http://www.pythonchallenge.com/pc/def/equality.html

根据页面提示：一个小写字母刚刚好被左右3个大写字母包围。

查看页面代码得到需要处理的字符。

将字符复制到文档/tmp/s.txt下

python:

import re

with open('/tmp/s.txt', 'r') as f:

content=f.read()

raw_letter=re.findall('[a-z]+[A-Z]{3}([a-z])[A-Z]{3}[a-z]+', content)

letter=''.join(raw_letter)

得出'linkedlist'

输入http://www.pythonchallenge.com/pc/def/linkedlist.html，页面显示linkedlist.php

输入http://www.pythonchallenge.com/pc/def/linkedlist.php

ok ,level 4