hackerrank05.py

# Day 4: Class vs. Instance

# Task 
# Write a Person class with an instance variable, age, and a constructor that takes an integer, initialAge, as a parameter. The
# constructor must assign initialAge to age after confirming the argument passed as initialAge is not negative; if a negative argument
# is passed as initialAge, the constructor should set age to 0 and print Age is not valid, setting age to 0.. In addition, you must
# write the following instance methods:

# 1. yearPasses() should increase the  instance variable by 1.
# 2. amIOld() should perform the following conditional actions:
#    If age < 13, print "You are young.".
#    If age >= 13 and age < 18, print "You are a teenager.".
#    Otherwise, print "You are old.".




class Person:
    def __init__(self, initialAge):
        if initialAge > 0:
            self.age = initialAge
        else:
            print("Age is not valid, setting age to 0.")
            self.age = 0

    def amIOld(self):
        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
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("")