python实现mysql的单引号字符串过滤方法

class Guide:
 def __init__(self):
  self.time_zone = 7*3600 #设置时区
  self.now_time = int(time.time()) + self.time_zone #取得当前时间
   #本地
  self.gamedb_model = mysql_conn.MySQLHelper(config.game_db['host'], config.game_db['user'],
    config.game_db['password'], config.game_db['db_name'],
    config.game_db['port'])
  #远程
  self.remote_model = mysql_conn.MySQLHelper(config.remote_db['host'], config.remote_db['user'],
    config.remote_db['password'], config.remote_db['db_name'],
    config.remote_db['port'])
  #game center
  self.commdb_model = mysql_conn.MySQLHelper(config.comm_db['host'], config.comm_db['user'],
   config.comm_db['password'], config.comm_db['db_name'],
   config.comm_db['port'])
 def index(self):
  #拿到第二天未登陆的用户
  for line in open("2014.3.20_global_ips.txt"):
   list = line.split('||')
   l = len(list)
   if l == 3:
    info = ''
   else:
    info = MySQLdb.escape_string(list[3])
   self.commdb_model.insert('ip_area',{'start_ip':list[0],'end_ip':list[1],'area':list[2],'info':info})
if __name__ =="__main__":
 keep = Guide()
 keep.index()