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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def all_leaders_from(self, leaderboard_name, **options):
        '''
        Retrieves all leaders from the named leaderboard.

        @param leaderboard_name [String] Name of the leaderboard.
        @param options [Hash] Options to be used when retrieving the leaders from the named leaderboard.
        @return the named leaderboard.
        '''
        raw_leader_data = self._range_method(
            self.redis_connection, leaderboard_name, 0, -1, withscores=False)
        return self._parse_raw_members(
            leaderboard_name, raw_leader_data, **options)