I am unable to understand the part of a code in python3
class Person: def __init__(self,initialAge,): if (initialAge<0): self.age=0 print("Age is not valid, setting age to 0.") else: self.age=initialAge # Add some more code to run some checks on initialAge def amIOld(self): 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.") # Do some computations in here and print out the correct statement to the console def yearPasses(self): self.age+=1 # Increment the age of the person in here ###Please tell me what the below written part of code does 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("")