семестр 1 / test-1

class spot:

	def __init__(self,a):
		self._a = a
		print("input done")

	@property
	def a(self):
		print("getter done")
		return self._a
		

	@a.setter
	def a(self,a):
		self._a = self.a + 4
		print("setter done")

dot = spot(4)
print(dot.a)
dot.a = 6
print(dot.a)