带requests_oauthlib的OAuth1产生URL编码错误

Question

我正在使用requests_oauthlib模块进行OAuth身份验证。 不幸的是，根据本教程的第一步，我无法重现OAuth1工作流程： http ://requests-oauthlib.readthedocs.org/en/latest/oauth1_workflow.html如果尝试获取访存响应，则会引发以下错误：

Traceback (most recent call last):
  File "/home/neumannr/test.py", line 18, in <module>
    fetch_response = oauth.fetch_request_token(request_token_url)
  File "/usr/lib/python2.7/site-packages/requests_oauthlib/oauth1_session.py", line 195, in fetch_request_token
    token = self._fetch_token(url)
  File "/usr/lib/python2.7/site-packages/requests_oauthlib/oauth1_session.py", line 264, in _fetch_token
    token = dict(urldecode(self.post(url).text))
  File "/usr/lib/python2.7/site-packages/oauthlib/common.py", line 135, in urldecode
    raise ValueError('Not a valid urlencoded string.')
ValueError: Not a valid urlencoded string.

我的测试代码如下：

#! /usr/bin/env python


# Using OAuth1Session
from requests_oauthlib import OAuth1Session

# Using OAuth1 auth helper
import requests
from requests_oauthlib import OAuth1

client_key = 'a'
client_secret = 'b'
request_token_url = 'https://api.twitter.com/oauth/request_token'


# Using OAuth1Session
oauth = OAuth1Session(client_key, client_secret=client_secret)
fetch_response = oauth.fetch_request_token(request_token_url)

由于本教程中的URL也不是URL编码的，所以我不明白为什么会发生这种情况。 如果我尝试对URL进行如下编码：

#! /usr/bin/env python


# Using OAuth1Session
import urllib
from requests_oauthlib import OAuth1Session

# Using OAuth1 auth helper
import requests
from requests_oauthlib import OAuth1

client_key = 'a'
client_secret = 'b'
request_token_url = urllib.quote('https://api.twitter.com/oauth/request_token')


# Using OAuth1Session
oauth = OAuth1Session(client_key, client_secret=client_secret)
fetch_response = oauth.fetch_request_token(request_token_url)

我收到一个缺少的架构错误：

Traceback (most recent call last):
  File "/home/neumannr/test.py", line 19, in <module>
    fetch_response = oauth.fetch_request_token(request_token_url)
  File "/usr/lib/python2.7/site-packages/requests_oauthlib/oauth1_session.py", line 195, in fetch_request_token
    token = self._fetch_token(url)
  File "/usr/lib/python2.7/site-packages/requests_oauthlib/oauth1_session.py", line 264, in _fetch_token
    token = dict(urldecode(self.post(url).text))
  File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 377, in post
    return self.request('POST', url, data=data, **kwargs)
  File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 324, in request
    prep = req.prepare()
  File "/usr/lib/python2.7/site-packages/requests/models.py", line 222, in prepare
    p.prepare_url(self.url, self.params)
  File "/usr/lib/python2.7/site-packages/requests/models.py", line 291, in prepare_url
    raise MissingSchema("Invalid URL %r: No schema supplied" % url)
requests.exceptions.MissingSchema: Invalid URL u'https%3A//api.twitter.com/oauth/request_token': No schema supplied

无论如何我如何使用oauthlib_requests？

谢谢，

理查德

Answer 1

该错误可能是解码响应尝试失败的结果。 有关更多详细信息，请参见OAuthlib第124版 。