python3 黑板客爬虫闯关游戏（二）

import urllib.request as ur
import urllib.parse as up
import re
url=‘http://www.heibanke.com/lesson/crawler_ex01/‘
pat=re.compile(r‘<h3>(.+)</h3>‘)
i=1
while i<=30:
    values={‘username‘:‘fang‘,‘password‘:i}
    #这里需要注意最后要utf8编码
    data=up.urlencode(values).encode(‘utf-8‘)
    req=ur.Request(url,data)
    res=ur.urlopen(req).read().decode(‘utf-8‘)
    html=pat.findall(res)
    if ‘错误‘ in html[0]:
    	print(‘password:‘,i,html[0])
    	i+=1
    else:
    	print(‘password:‘,i,html[0])
    	break