python 模拟百度搜索

 import urllib.request
 def Url(url):
     flag = input("请输入要搜索的关键字：")
     headers_ = {
         "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Maxthon/4.4.3.4000 Chrome/30.0.1599.101 Safari/537.36"
     }
     wd = {"wd" : flag}
     wd = urllib.parse.urlencode(wd)
     url = url + "?" + wd
     print(url)
     req = urllib.request.Request(url,headers=headers_)
     html = urllib.request.urlopen(req).read().decode("utf-8")
     print(html)

 url = 'http://www.baidu.com/s'
 Url(url)