new_contents: class Song(object):
  
      def __init__(self, lyrics):
          self.lyrics = lyrics
  
      def sing_me_a_song(self):
          for line in self.lyrics:
              print(line)
  
  
  happy_bday = Song(["Happy birthday to you",
                     "I don't want to get sued",
                     "So I'll stop right there"])
  
  bulls_on_parade = Song(["They rally around tha family",
                          "With pockets full of shells"])
  
  happy_bday.sing_me_a_song()
  
  bulls_on_parade.sing_me_a_song()
  
  lyrics = ["你永远不懂我伤悲", "像白天不懂夜的黑"]
  herne = Song(lyrics)
  herne.sing_me_a_song()
  
  
subject: test pyCharm