python的http和json等简单操作tips

import json
import httplib,urllib
def doWork(domain,port,act,keyword,envId,type):
    h1=httplib.HTTPConnection(domain,port)
    params=urllib.urlencode({'act':act,'keyWord':keyword,'envId':envId,'type':type})
    headers={"Content-type":"application/x-www-form-urlencoded","Accept":"text/plain"}
    h1.request("POST","/service.do",params,headers)
    response=h1.getresponse()
    if response.status == 200:
        data=response.read()
        data=unicode(data,'GBK').encode('UTF-8')
        h1.close();
        return data;
    else:
        print response.status +",reason:"+response.reason
        h1.close()

def getFirstKey(groupContent):
    jdata=json.loads(groupContent);
    dbKeyStr=jdata["result"][0]["data"][0]["content"];
    dbKeys=dbKeyStr.split(",");
    keyAndWeight=dbKeys[0].split(":");
    return keyAndWeight[0];