pythonchallenge.com第四题 4
简单的一个正则表达式，很简单

#!/usr/bin/env pythonimport urllibimport redef fitString(rule,url):    wp = urllib.urlopen(url)        content = wp.read()    m = re.findall(rule,content)    return mif __name__ == '__main__':    rule = raw_input('rules:  \n')    url = raw_input('url:  \n')    returnlist =  fitString(rule,url)    for strs in returnlist:        print strs[4]