python requests请求

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#coding:utf-8 import requests import json try:     from urllib.parse import urlencode except:     from urllib import urlencode    session = requests.Session()    def serialize(params):     if isinstance(params,dict):         return urlencode(params)   def request_data(host,path,params,method="GET",body={}):     try:         method = method.upper()         headers = {             'Content-Type': 'application/json',                    }         if method=="POST":             request_params={}             for k,v in params.items():                 request_params[k]=v             serialize_params= serialize(request_params)             url="{}{}?{}".format(host,path,serialize_params)             print('curl -X POST -H "Content-Type:application/json" "{}" -d \'{}\' '.format(url,json.dumps(body)))             response = session.post(url,data=json.dumps(body),headers=headers)         else:             request_params = {}             for k,v in params.items():                 request_params[k]=v             serialize_params= serialize(request_params)             url="{}{}?{}".format(host,path,serialize_params)             print('curl -X GET "{}"'.format(url))             response = session.get(url,headers=headers)         if response.status_code == 200:             res = json.loads(response.text)             return res         return []     except Exception as e:         print(e)         return [] if __name__ == "__main__":     host="www.baidu.com"     path="/s"     params={     "q":"test"     }     request_data(path)