text: class Person:
      def __init__(self, initialAge):
          # Add some more code to run some checks on initialAge
          if initialAge < 0:
              print("Age is not valid, setting age to 0.")
              self.age = 0
          else:
              self.age = initialAge
  
      def amIOld(self):
          if self.age < 13:
              print("You are young.")
          elif 13 <= self.age < 18:
              print("You are a teenager.")
          else:
              print("You are old.")
          # Increment the age of the person in here
  
      def yearPasses(self):
          # Increment the age of the person in here
          self.age += 1
  