在python中使用oauth登录facebook？

import requests
from requests_oauthlib import OAuth2Session

# 定义Facebook应用的客户端ID和客户端密钥
client_id = 'YOUR_CLIENT_ID'
client_secret = 'YOUR_CLIENT_SECRET'

# 定义授权回调URL
redirect_uri = 'http://localhost:8000/callback'

# 创建OAuth2Session对象
oauth = OAuth2Session(client_id, redirect_uri=redirect_uri)

# 获取授权URL
authorization_url, state = oauth.authorization_url('https://www.facebook.com/dialog/oauth')

# 打印授权URL，用户需要在浏览器中访问该URL并登录Facebook授权
print('请在浏览器中访问以下URL并登录Facebook授权：')
print(authorization_url)

# 获取授权码
authorization_code = input('请输入授权码：')

# 获取访问令牌
token = oauth.fetch_token('https://graph.facebook.com/v12.0/oauth/access_token',
                          authorization_response=authorization_code,
                          client_secret=client_secret)

# 使用访问令牌访问Facebook API
response = oauth.get('https://graph.facebook.com/v12.0/me')
data = response.json()

# 打印用户信息
print('用户ID:', data['id'])
print('用户名:', data['name'])