使用httplib.httpConnection连接报错?报错

各位大佬好：

    我使用conn.request(method="POST","post.php",body=params,headers=headers)发送请求时，报错：

    SyntaxError: non-keyword arg after keyword arg

下面是源代码：

import httplib,urllib

 #请求传输的内容 

params =urllib.urlencode({'memberInfoPart.memberLoginName':'abc@163.com','memberInfoPart.memberLoginPw':'aaaaaaaa','rememberLoginName':'on'})

#头部信息

  headers={"Host":"www.163.com","User-Agent":"Mozilla/5.0 (Windows NT 5.1; rv:21.0) Gecko/20100101 Firefox/21.0","Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8","Accept-Language":"zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3","Accept-Encoding":"gzip, deflate","Referer":"http://www.163.com/163_passport/login.do?return_url=http%3A%2F%2Fwww.163.com/FindexAction_index.do","Connection":"keep-alive","Content-Type":"application/x-www-form-urlencoded","Content-Length":"185"}

#进行连接

conn =httplib.HTTPConnection("http://www.163.com/"，80)

#发送请求

conn.request(method="POST",url="163_passport/login.do?",body=params,headers=headers)

提示错误 ：

Traceback (most recent call last):
  File "<pyshell#7>", line 1, in <module>
    conn.request(method="POST",url="163_passport/login.do?",body=params,headers=headers)
  File "D:\Program Files\python\lib\httplib.py", line 958, in request
    self._send_request(method, url, body, headers)
  File "D:\Program Files\python\lib\httplib.py", line 986, in _send_request
    self.putrequest(method, url, **skips)
  File "D:\Program Files\python\lib\httplib.py", line 856, in putrequest
    raise CannotSendRequest()
CannotSendRequest

把上面的发送请求conn.request(method="POST",url="163_passport/login.do?",body=params,headers=headers)改为

conn.request(method="POST",url="163_passport/login.do?",params,headers)

提示报下面的错误

SyntaxError: non-keyword arg after keyword arg