code: def client(self, verifier=None):
          
          # We're just starting out and don't have neither request nor access
          # token. Return the standard client
          if not self._request_token and not self._access_token:
              client = oauth.Client(self.consumer, timeout=TIMEOUT)
          
          # We're one step in, we've got the request token and can add that to 
          # the client.
          if self._request_token and not self._access_token:
              if verifier is not None:
                  self._request_token.set_verifier(verifier)
              client = oauth.Client(self.consumer, self._request_token, timeout=TIMEOUT)
              
          # Two steps in, we've got an access token and can now properly sign 
          # our client requests with it.
          if self._access_token:
              client = oauth.Client(self.consumer, self._access_token, timeout=TIMEOUT)
          
          return client
docs: Return the correct client depending on which stage of the OAuth process
          we're in.