import requests

url = 'http://www.baidu.com/s?page=2'  # 使用?携带参数
r = requests.get(url)
print(r.url)

import requests
url = 'http://www.baidu.com/s'  
data= {'page': '2'}  #将携带的参数传给params
r = requests.get(url, params=data)
print(r.url)