generator.py

class InfiniteLineup:
    def __init__(self, players):
        self.players = players
        
    def lineup(self):
        lineup_max = len(self.players)
        idx = 0
    
        while True:
            if idx < lineup_max:
                yield self.players[idx]
            else:
                idx = 0
                yield self.players[idx]
            
            idx += 1
            
    def __repr__(self):
        return f'InfiniteLineup({self.players})'
        
    def __str__(self):
        return f"InfiniteLineup with the players: {', '.join(self.players)}"


astros = [
  'Springer',
  'Bregman',
  'Altuve',
  'Correa',
  'Reddick',
  'Gonzalez',
  'McCann',
  'Davis',
  'Tucker'
]

full_lineup = InfiniteLineup(astros)
astros_lineup = full_lineup.lineup()

print(next(astros_lineup))
print(next(astros_lineup))
print(next(astros_lineup))
print(next(astros_lineup))
print(next(astros_lineup))
print(next(astros_lineup))
print(next(astros_lineup))
print(next(astros_lineup))
print(next(astros_lineup))
print(next(astros_lineup))
print(next(astros_lineup))
print(next(astros_lineup))

print(repr(full_lineup))

print(str(full_lineup))