def rank_for_in(self, leaderboard_name, member):
        '''
        Retrieve the rank for a member in the named leaderboard.

        @param leaderboard_name [String] Name of the leaderboard.
        @param member [String] Member name.
        @return the rank for a member in the leaderboard.
        '''
        if self.order == self.ASC:
            try:
                return self.redis_connection.zrank(
                    leaderboard_name, member) + 1
            except:
                return None
        else:
            try:
                return self.redis_connection.zrevrank(
                    leaderboard_name, member) + 1
            except:
                return None
Retrieve the rank for a member in the named leaderboard.

        @param leaderboard_name [String] Name of the leaderboard.
        @param member [String] Member name.
        @return the rank for a member in the leaderboard.