text: class Human:
      name = "alice"
      def intro(self):
          print("제 이름은 %s 입니다." % self.name)
  
  class Child(Human):
      def hello(self):
          print("저는 %s 2세 입니다." % self.name)
  
  
  def main():
      h = Child()
      h.hello()
  
  if __name__ == "__main__":
      main()
  