class Fruit:
    def __init__(self, name, color):
        self.name = name
        self.color = color
        self.eaten = False
        self.age = 0
        
    def is_eaten(self):
        return self.eaten
    
    def eat(self):
        self.eaten = True
        
    def allergy_check(self, allergic_color):
        return self.color == allergic_color
        
    def age_fruit(self):
        self.age += 1
        
    def __str__(self):
        return self.color + " " + self.name + " that is " + \
               str(self.age) + " days old"
    
    
fruit = Fruit("banana", "yellow")
print(fruit)
print(fruit.allergy_check("red"))
fruit.age_fruit()
print(fruit)
print(fruit.is_eaten())
fruit.eat()
print(fruit.is_eaten())