def get_imdbMovieID(self, movieID):
        """Translate a movieID in an imdbID.
        If not in the database, try an Exact Primary Title search on IMDb;
        return None if it's unable to get the imdbID.
        """
        try: movie = Title.get(movieID)
        except NotFoundError: return None 
        imdbID = movie.imdbID
        if imdbID is not None: return '%07d' % imdbID
        m_dict = get_movie_data(movie.id, self._kind)
        titline = build_title(m_dict, canonical=1, ptdf=1)
        imdbID = self.title2imdbID(titline)
        # If the imdbID was retrieved from the web and was not in the
        # database, update the database (ignoring errors, because it's
        # possibile that the current user has not update privileges).
        # There're times when I think I'm a genius; this one of
        # those times... <g>
        if imdbID is not None:
            try: movie.imdbID = int(imdbID)
            except: pass 
        return imdbID