code: def _get_token(self):
          
          informations = self._set_format_oauth()
          oauth_url = "https://datamarket.accesscontrol.windows.net/v2/OAuth2-13"
          token = requests.post(oauth_url, informations).json()
          return token["access_token"]
docs: Get token for make request. The The data obtained herein are used 
              in the variable header.
  
              Returns:
                  To perform the request, receive in return a dictionary
                  with several keys. With this method only return the token
                  as it will use it for subsequent requests, such as a 
                  sentence translate. Returns one string type.