old_contents: from nba_data.data.season import Season
  
  
  class SeasonRange:
      def __init__(self, start, end):
          assert isinstance(start, Season)
          assert isinstance(end, Season)
  
          self.start = start
          self.end = end
  
new_contents: from nba_data.data.season import Season
  
  # TODO: @jbradley add assertions to compare start and end
  
  
  class SeasonRange:
      def __init__(self, start, end):
          assert isinstance(start, Season)
          assert isinstance(end, Season)
  
          self.start = start
          self.end = end
  
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