Web logon

answers.py

import urllib.request, urllib.parse  

MAX_TRIES = 3  

if __name__ == '__main__':      
  opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor())     
  urllib.request.install_opener(opener)     
  params = urllib.parse.urlencode(dict(login='username@yahoo.com',                                      
                                       passwd='y0uRpas5'))     
  utf_params = params.encode('utf-8')      

  login_success = False     
  cur_try = 0      

  while not login_success and MAX_TRIES != cur_try:         
    try:             
      opener.open('https://login.yahoo.com', utf_params)             
      url = opener.open('http://answers.yahoo.com')
      content = url.read().decode('utf-8')
      # print(content)
      login_success = True
    except Exception as e:
      print(e)
      cur_try += 1