python request库 百度360关键词搜索提交

import requests
keyword="python"
try:
    kv={'wd':keyword}
    r=requests.get("https://www.baidu.com/",params=kv)
    print(r.request.url)
    r.raise_for_status()
    print(len(r.text))
except:
    print("爬取失败")