Леушин Илья 528 IndexProp 7918			Елизавета Череменина, 411 группа IndexProp 8070
n	1	_sentinel = object()	n	1	_obj = object()
	2			2
	3	class Sequence:		3	class Sequence:
	4			4
n	5	def __init__(self, value=_sentinel):	n	5	def __init__(self, initial=_obj):
	6	if value is _sentinel:		6	if initial is _obj:
	7	self.sequence = []		7	self._seq = []
	8	elif hasattr(value, '__getitem__'):		8	elif hasattr(initial, '__getitem__'):
	9	self.sequence = value		9	self._seq = initial
	10	else:		10	else:
n	11	self.sequence = [value]	n	11	self._seq = [initial]
	12			12
	13	@property		13	@property
	14	def sequence(self):		14	def sequence(self):
n	15	return self._sequence	n	15	return self._seq
	16			16
	17	@sequence.setter		17	@sequence.setter
	18	def sequence(self, value):		18	def sequence(self, value):
	19	if hasattr(value, '__getitem__'):		19	if hasattr(value, '__getitem__'):
n	20	self._sequence = value	n	20	self._seq = value
	21	else:		21	else:
n	22	self._sequence = [value]	n	22	self._seq = [value]
	23			23
	24	@sequence.deleter		24	@sequence.deleter
	25	def sequence(self):		25	def sequence(self):
t	26	self._sequence = type(self._sequence)()	t	26	self._seq = type(self._seq)()

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