class_vs_instance.py

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<18):
            print("You are a teenager.")
        else:
            print("You are old.")
        
    def yearPasses(self):
        
       self.age += 1    
        # Increment the age of the person in here
        

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("")