old_contents: class MatchError(Exception):
      def __init__(self, sport, teams):
          self.sport = sport
          self.teams = teams
  
      def __str__(self):
          return '{} match not found for {}'.format(self.sport, ', '.join(self.teams))
  
  
  class SportError(Exception):
      def __init__(self, sport):
          self.sport = sport
  
      def __str__(self):
          return 'Sport not found for {}'.format(self.sport)
  
  
  class StatsNotFound(Exception):
      def __init__(self, sport):
          self.sport = sport
  
      def __str__(self):
          return 'Extra stats not yet supported for {}'.format(self.sport)
  
  
  class TeamNotFoundError(Exception):
      def __init__(self, sport, team):
          self.sport = sport
          self.team = team
  
      def __str__(self):
          return 'Team {} not found for sport {}'.format(self.team, self.sport)
  
new_contents: class MatchError(Exception):
      def __init__(self, sport, teams):
          self.sport = sport
          self.teams = teams
  
      def __str__(self):
          return '{} match not found for {}'.format(self.sport, ', '.join(self.teams))
  
  
  class SportError(Exception):
      def __init__(self, sport):
          self.sport = sport
  
      def __str__(self):
          return 'Sport not found for {}'.format(self.sport)
  
  
  class StatsError(Exception):
      def __init__(self, sport):
          self.sport = sport
  
      def __str__(self):
          return 'Extra stats not yet supported for {}'.format(self.sport)
  
  
  class TeamError(Exception):
      def __init__(self, sport, team):
          self.sport = sport
          self.team = team
  
      def __str__(self):
          return 'Team {} not found for sport {}'.format(self.team, self.sport)
  
subject: Rename errors