第二关猜登录密码，需要用到urllib.request和urllib.parse

也很简单，给代码

import urllib.request as urimport urllib.parse as upimport reurl='http://www.heibanke.com/lesson/crawler_ex01/'pat=re.compile(r'
(.+)
')i=1while 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