Python发送http请求解析返回json小demo

python发起http请求，并解析返回的json字符串的小demo，方便以后用到。

    #! /usr/bin/env python
    # -*- coding:gbk -*-

    import os
    import sys
    import json
    import urllib
    import urllib2

    if __name__ == "__main__":
        query_file = sys.argv[1]
        query_index = 0
        with open(query_file, 'r') as fp:
            for line in fp:
                query = line.rstrip()
                query_index = query_index + 1
                query_gbk = query
                query = query.decode('gbk', 'ignore').encode('utf8', 'ignore')
                url = 'http://10.42.141.12:8089/adrender?query=%s&ad_num=3&srcid=101'\\
                      '&ip=172.22.182.55&baiduid=61ABB404320C72436EB6B8352DFBB388:FG=1' % (query)
                req = urllib2.urlopen(url)
                page = req.read()
                ddict = json.loads(page)
                expid = ddict['expid']
                sid = ddict['sid']
                ad_num = ddict['response_adnum']
                for i in range(0, ad_num):
                    output_html = '%s-%d.html' % (query_gbk, i)
                    output = open(output_html, 'w')
                    ad = ddict['response_ads'][i].encode('utf8', 'ignore')
                    output.write('\')
                    output.write('\    "Content-Type" content="text/html; charset=UTF-8">\\')
                    output.write("%s" % (ad))
                    output.write('\\')
                    output.close()

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