如何使用带有授权类型“客户端凭据”的请求 OAuthlib？

Question

所以我尝试调用 仅 在文档中提供令牌 url 的 API。为此，我想使用 python requests 包中的 OAuthlib。当我查看their docs 时，他们给出了这个例子：

# Credentials you get from registering a new application
client_id = '<the id you get from github>'
client_secret = '<the secret you get from github>'

# OAuth endpoints given in the GitHub API documentation
authorization_base_url = 'https://github.com/login/oauth/authorize'
token_url = 'https://github.com/login/oauth/access_token'

from requests_oauthlib import OAuth2Session
github = OAuth2Session(client_id)

# Redirect user to GitHub for authorization
authorization_url, state = github.authorization_url(authorization_base_url)
print ('Please go here and authorize,', authorization_url)

# Get the authorization verifier code from the callback url
redirect_response = input('Paste the full redirect URL here:')

# Fetch the access token
github.fetch_token(token_url, client_secret=client_secret,
        authorization_response=redirect_response)

# Fetch a protected resource, i.e. user profile
r = github.get('https://api.github.com/user')
print (r.content)

但在 API 文档中，该服务仅提供令牌 url。它给出了这个 Http Body POST 示例：

Method: POST
Host: https://login.bol.com/token
Content-Type: application/x-www-form-urlencoded
Accept: application/json

Body: client_id=oRNWbHFXtAECmhnZmEndcjLIaSKbRMVE&client_secret= MaQHPOnmYkPZNgeRziPnQyyOJYytUbcFBVJBvbMKoDdpPqaZbaOiLUTWzPAkpPsZFZbJHrcoltdgpZolyNcgvvBaKcmkqFjucFzXhDONTsPAtHHyccQlLUZpkOuywMiOycDWcCySFsgpDiyGnCWCZJkNTtVdPxbSUTWVIFQiUxaPDYDXRQAVVTbSVZArAZkaLDLOoOvPzxSdhnkkJWzlQDkqsXNKfAIgAldrmyfROSyCGMCfvzdQdUQEaYZTPEoA&grant_type=client_credentials

或者这个 HTTP 头 POST 例子：

Method: POST
Host: https://login.bol.com/token?grant_type=client_credentials
Accept: application/json
Authorization: Basic <credentials>

其中<credentials> 是<client_id>:<client_secret> 的串联。

如何通过此 API 使用请求 OAuthlib？因为API docs 没有说明任何授权基础网址。

Answer 1

我认为您可以像这样提供<client_id>:<client_secret>：

from oauthlib.oauth2 import BackendApplicationClient
client = BackendApplicationClient(client_id=client_id)
oauth = OAuth2Session(client=client)
token = oauth.fetch_token(token_url='https://provider.com/oauth2/token', client_id=client_id,
        client_secret=client_secret)

见this