Python自动重试HTTP连接装饰器

#-*- coding: utf-8 -*- 
#all decorators in this tool file 
#author: orangleliu 
 
############################################################ 
#http连接有问题时候，自动重连 
def conn_try_again(function): 
 RETRIES = 0 
 #重试的次数 
 count = {"num": RETRIES} 
 def wrapped(*args, **kwargs): 
 try: 
 return function(*args, **kwargs) 
 except Exception, err: 
 if count['num'] < 2: 
 count['num'] += 1 
 return wrapped(*args, **kwargs) 
 else: 
 raise Exception(err) 
 return wrapped 

@conn_try_again 
def post_query_bandwidth_for_bandwidth(self, contract_no, data_month, product_code): 
 #根据webluker接口情况获取计费数据 
 try: 
 post_data = {'contract':contract_no, 'month': data_month, 'code':product_code} 
 params = urllib.urlencode(post_data) 
 response = urllib2.urlopen(WEBLUKER_BANDWITH_API + "?" +params) 
 billdata = {} 
 billdata = response.read() 
 if not billdata: 
 billdata = {} 
 return billdata 
 except Exception, err: 
 err = u'与webluker接口间通信异常' 
 raise Exception(err)