Lazy Initialization

lazy_init.py

class Fruit:
	def __init__(self, sort):
		self.sort = sort

class Fruits:
	def __init__(self):
		self.sorts = {}

	def get_fruit(self, sort):
		if sort not in self.sorts:
			self.sorts[sort] = Fruit(sort)

		return self.sorts[sort]

if __name__ == '__main__':
	fruits = Fruits()

	print fruits.get_fruit('Apple')
	print fruits.get_fruit('Lime')