Волков-Рарог Артём Александрович, 516 группа PushPull 9376			Хуторной Дмитрий, 516 PushPull 9447
t	1	class Pushpull:	t	1	class Pushpull:
	2			2
	3	def __init__(self, n=0):		3	def __init__(self, n=0):
	4	Pushpull.pos = n		4	Pushpull.pos = n
	5			5
	6	def push(self, n=1):		6	def push(self, n=1):
	7	Pushpull.pos += n		7	Pushpull.pos += n
	8			8
	9	def pull(self, n=1):		9	def pull(self, n=1):
	10	Pushpull.pos -= n		10	Pushpull.pos -= n
	11			11
	12	def __iter__(self):		12	def __iter__(self):
	13	if Pushpull.pos < 0:		13	if Pushpull.pos < 0:
	14	return iter(range(0, Pushpull.pos, -1))		14	return iter(range(0, Pushpull.pos, -1))
	15	else:		15	else:
	16	return iter(range(Pushpull.pos))		16	return iter(range(Pushpull.pos))
	17			17
	18	def __str__(self):		18	def __str__(self):
	19	if Pushpull.pos < 0:		19	if Pushpull.pos < 0:
	20	return f'<{abs(Pushpull.pos)}<'		20	return f'<{abs(Pushpull.pos)}<'
	21	elif Pushpull.pos > 0:		21	elif Pushpull.pos > 0:
	22	return f'>{Pushpull.pos}>'		22	return f'>{Pushpull.pos}>'
	23	else:		23	else:
	24	return '<0>'		24	return '<0>'

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