class data:
	def __init__(self,shop=None, inp='',out=''):
		self.setShop(shop)
		self.setInp(inp)
		self.setOut(out)

	def setShop(self, value):self.__shop=value
	def setInp(self, value):self.__inp=value
	def setOut(self, value):self.__out=value

	def getShop(self):return self.__shop
	def getInp(self):return self.__inp
	def getOut(self):return self.__out

	def readFile(self, filename):
		self.setInp(filename)
		self.read()
	def writeFile(self, filename):
		self.setOut(filename)
		self.write()

	def read(self):
		pass
	def write(self):
		pass
