Print object as a scoreboard.

def print_scoreboard(self):
        """Print object as a scoreboard."""
        output = ''
        # parallel dictionaries with innings and scores
        innings = []
        away = []
        home = []
        for x in self:
            innings.append(x['inning'])
            away.append(x['away'])
            home.append(x['home'])
        # go through all the information and make a nice output
        # that looks like a scoreboard
        output += 'Inning\t'
        for x in innings:
            output += str(x) + ' '
        output += '\n'
        for x in innings:
            output += '---'
        output += '\nAway\t' + self.__enumerate_scoreboard(away)
        output += '\nHome\t' + self.__enumerate_scoreboard(home)
        return output