使用requests_oauthlib的OAuth1产生URL编码错误
我正在使用requests_oauthlib模块进行OAuth认证。可惜的是，我无法按照这个教程的第一步重现OAuth1的工作流程：http://requests-oauthlib.readthedocs.org/en/latest/oauth1_workflow.html。如果我尝试获取响应，就会出现以下错误：
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)
因为教程中也没有对URL进行URL编码，所以我不明白为什么会发生这种情况。如果我尝试像这样对URL进行URL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)
我会得到一个缺少模式的错误：
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
那么我该如何使用oauthlib_requests呢？
谢谢，
理查德