unlimited loop

stock.py

stock = {'apple': 10, 'banana': 20, 'orange':0 }
alreadyAte = ['ehsan']

food = input('What food was eaten? ')
person = input('Who ate the food? ')

def menu():
	print("Press 1: To add stock. ")
	print("Press 2: To check stock. ")
	print("Press 3: To enter purchase. ")
	print("Press q: To quit the program. ")
	return input("What would you like to do? ")

run = menu()

while True:
	if food in stock:
		if person in alreadyAte:
			print('{} was sent to the brig'.format(person))
		else:
			if stock[food] > 0:
				stock[food] -= 1
				alreadyAte.append(person)
				print("{} ate {}".format(person,food))
			else:
				print('{} did not eat because we are out of {}'.format(person,food))
	else:
		print('{} is out of stock'.format(food))