request库访问bing

import requests
for i in range(1,21):
    r = requests.get("http://www.bing.com/")
    r.raise_for_status()
    r.encoding='utf-8'
    print(r.status_code)
print(r.text)
len1=len(r.text)
len2=len(r.content)
print('text()属性所返回的长度{}'.format(len1))
print('content()属性所返回的长度{}'.format(len2))