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OAuth1 authentication using Requests-OAuthlib failing - Printable Version

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OAuth1 authentication using Requests-OAuthlib failing - dataplumber - Feb-20-2020

Hello, I am trying to authenticate with OAuth1 using Requests-OAuthlib and it is failing. I am taking help from below website :

https://requests-oauthlib.readthedocs.io/en/latest/api.html#oauth-1-0

client_key = 'xxxx'
client_secret = 'xxxx'
callback_uri = 'https://127.0.0.1/callback'
request_token_url='https://rest.immobilienscout24.de/restapi/security/oauth/request_token',
access_token_url='https://rest.immobilienscout24.de/restapi/security/oauth/access_token',
authorize_url='https://rest.immobilienscout24.de/restapi/security/oauth/confirm_access',
oauth_session = OAuth1Session(client_key,client_secret=client_secret, callback_uri=callback_uri)
oauth_session.fetch_request_token(request_token_url)
Error:
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/requests_oauthlib/oauth1_session.py", line 287, in fetch_request_token
    token = self._fetch_token(url, **request_kwargs)
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/requests_oauthlib/oauth1_session.py", line 365, in _fetch_token
    r = self.post(url, **request_kwargs)
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/requests/sessions.py", line 578, in post
    return self.request('POST', url, data=data, json=json, **kwargs)
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/requests/sessions.py", line 516, in request
    prep = self.prepare_request(req)
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/requests/sessions.py", line 459, in prepare_request
    hooks=merge_hooks(request.hooks, self.hooks),
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/requests/models.py", line 318, in prepare
    self.prepare_auth(auth, url)
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/requests/models.py", line 549, in prepare_auth
    r = auth(self)
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/requests_oauthlib/oauth1_auth.py", line 109, in __call__
    unicode(r.url), unicode(r.method), None, r.headers
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/oauthlib/oauth1/rfc5849/__init__.py", line 313, in sign
    ('oauth_signature', self.get_oauth_signature(request)))
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/oauthlib/oauth1/rfc5849/__init__.py", line 136, in get_oauth_signature
    normalized_uri = signature.base_string_uri(uri, headers.get('Host', None))
  File "/Users/desktop/Documents/anaconda/anaconda3/envs/py27/lib/python2.7/site-packages/oauthlib/oauth1/rfc5849/signature.py", line 144, in base_string_uri
    raise ValueError('uri must include a scheme and netloc')
ValueError: uri must include a scheme and netloc