#!/usr/bin/python3.8

class Books:
	object_counter=0
	def __init__(self, my_isbn,my_title, my_price):
		self.__isbn=my_isbn
		self.title=my_title
		self.price=my_price
		if self.price>10:
			Books.object_counter+=1

	def set_isbn(self, my_isbn):
		self.__isbn=my_isbn

	def get_isbn(selg):
		return self.__isbn

	def __str__(self):
		return f'{self.__isbn},{self.title},{self.price}'

	@classmethod
	def showcounter(cls):
		return cls.object_counter
	


def main():
	x=Books(1234 ,"My title" ,30.45)
	print (x)
	x.title="New Title"
	print (x)

	print(Books.showcounter)
	pass

if __name__=="__main__":
	main()