day-4.py

#!/bin/python3

import sys

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):
        # Do some computations in here and print out the correct statement to the console
        if self.age < 13: print("You are young.")
        elif self.age >= 13 and self.age < 18: print("You are a teenager.")
        else: print("You are old.")
    def yearPasses(self):
        # Increment the age of the person in here  
        self.age = self.age + 1
		
t = int(input())
for i in range(0, t):
    age = int(input())         
    p = Person(age)  
    p.amIOld()
    for j in range(0, 3):
        p.yearPasses()       
    p.amIOld()
    print("")