title: Python Vimeo Api Error 401 Unauthorized - Invalid signature - The oauth_signature passed was not valid
body: <pre><code>d = {'client_id': '***', 'client_secret': '***', 'grant_type': 'authorization_code','redirect_uri': 'http://192.168.2.135:8000/vimeo/response/',
  'response_type': 'code'}
  req = oauth2.Request(method='GET',url="https://api.vimeo.com/oauth/authorize",parameters=d)
  consumer = oauth2.Consumer(key = '***',secret="***")
  client = oauth2.Client(consumer)
  request_token_url = "http://vimeo.com/oauth/access_token"
  resp,content = client.request(request_token_url,"GET")
  </code></pre>