семестр 1 / task

class Tele:

	def __chsetLG(self):
		self.__mt = "IPS"
		self.__cl = "Black"
		self.__pr = 50000

	def __chsetSN(self):
		self.__mt = "VA"
		self.__cl = "Silver"
		self.__pr = 40000

	def __chsetPH(self):
		self.__mt = "OLED"
		self.__cl = "White"
		self.__pr = 45000

	def __init__(self, st):
		check_str = True
		
		try:
			str(st)
		except:
			check_str = False
		
		if check_str == True:
			self.mod = st
		else:
			print("Invalid operation")
		
		if self.mod == "LG":
			self.__chsetLG()
		elif self.mod == "SN":
			self.__chsetSN()
		elif self.mod == "PH":
			self.__chsetPH()

	def tv(self):
		print(f'Model of chosen TV: {self.mod}')
		print(f'Matrix type of chosen TV: {self.__mt}')
		print(f'Body color of chosen TV: {self.__cl}')
		print(f'Price of chosen TV: {self.__pr}')

TV = Tele("LG")
TV.tv()
TV.__chsetLG()