def get_audiobook(self, id, market=None):
        """ Get Spotify catalog information for a single audiobook identified by its unique
        Spotify ID.

        Parameters:
        - id - the Spotify ID for the audiobook
        - market - an ISO 3166-1 alpha-2 country code.
        """
        audiobook_id = self._get_id("audiobook", id)
        endpoint = f"audiobooks/{audiobook_id}"

        if market:
            endpoint += f'?market={market}'

        return self._get(endpoint)
 Get Spotify catalog information for a single audiobook identified by its unique
        Spotify ID.

        Parameters:
        - id - the Spotify ID for the audiobook
        - market - an ISO 3166-1 alpha-2 country code.
        
spotipy/client.py