Морозов Иван Дмитриевич, 517 ParDescr 8384			Хайруллина Алина ParDescr 8452
t	1	class ParDescr:	t	1	class ParDescr:
	2			2
	3	def __init__(self, initial_value):		3	def __init__(self, initial_value):
	4	self.initial_value = initial_value		4	self.initial_value = initial_value
	5	self.storage_name = None		5	self.storage_name = None
	6			6
	7	def __set_name__(self, owner, name):		7	def __set_name__(self, owner, name):
	8	self.storage_name = f'_{name}'		8	self.storage_name = f'_{name}'
	9			9
	10	def __get__(self, instance, owner):		10	def __get__(self, instance, owner):
	11	if instance is None:		11	if instance is None:
	12	return self.initial_value		12	return self.initial_value
	13	return getattr(instance, self.storage_name, self.initial_value)		13	return getattr(instance, self.storage_name, self.initial_value)
	14			14
	15	def __set__(self, instance, value):		15	def __set__(self, instance, value):
	16	setattr(instance, self.storage_name, value)		16	setattr(instance, self.storage_name, value)
	17			17
	18	def __delete__(self, instance):		18	def __delete__(self, instance):
	19	if hasattr(instance, self.storage_name):		19	if hasattr(instance, self.storage_name):
	20	delattr(instance, self.storage_name)		20	delattr(instance, self.storage_name)
	21	else:		21	else:
	22	raise KeyError(self.storage_name)		22	raise KeyError(self.storage_name)

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