Алмаз Сейтхазин (КФ МГУ, кафедра НДС) AbsoluteMeta 10827			david_Yakhin_312 AbsoluteMeta 10856
t	1	from collections.abc import Callable	t	1	from collections.abc import Callable
	2			2
	3	class Absolute(type):		3	class Absolute(type):
	4			4
	5	def __new__(mcls, name, bases, namespace, **kwargs):		5	def __new__(mcls, name, bases, namespace, **kwargs):
	6	width_name = kwargs.pop('width', 'width')		6	width_name = kwargs.pop('width', 'width')
	7	height_name = kwargs.pop('height', 'height')		7	height_name = kwargs.pop('height', 'height')
	8	cls = super().__new__(mcls, name, bases, namespace)		8	cls = super().__new__(mcls, name, bases, namespace)
	9	original_abs = getattr(cls, 'abs', None)		9	original_abs = getattr(cls, 'abs', None)
	10	existing_abs = getattr(cls, '__abs__', None)		10	existing_abs = getattr(cls, '__abs__', None)
	11	if not isinstance(existing_abs, Callable):		11	if not isinstance(existing_abs, Callable):
	12			12
	13	def __abs__(self, _orig_abs=original_abs, _w_name=width_name		13	def __abs__(self, _orig_abs=original_abs, _w_name=width_name
	>	, _h_name=height_name):		>	, _h_name=height_name):
	14	if isinstance(_orig_abs, Callable):		14	if isinstance(_orig_abs, Callable):
	15	func = _orig_abs		15	func = _orig_abs
	16	if hasattr(func, '__get__'):		16	if hasattr(func, '__get__'):
	17	func = func.__get__(self, type(self))		17	func = func.__get__(self, type(self))
	18	try:		18	try:
	19	return func()		19	return func()
	20	except TypeError:		20	except TypeError:
	21	pass		21	pass
	22	len_meth = getattr(self, '__len__', None)		22	len_meth = getattr(self, '__len__', None)
	23	if isinstance(len_meth, Callable):		23	if isinstance(len_meth, Callable):
	24	try:		24	try:
	25	return len_meth()		25	return len_meth()
	26	except TypeError:		26	except TypeError:
	27	pass		27	pass
	28	w_attr = getattr(self, _w_name, None)		28	w_attr = getattr(self, _w_name, None)
	29	h_attr = getattr(self, _h_name, None)		29	h_attr = getattr(self, _h_name, None)
	30	if isinstance(w_attr, Callable) and isinstance(h_attr, C		30	if isinstance(w_attr, Callable) and isinstance(h_attr, C
	>	allable):		>	allable):
	31	try:		31	try:
	32	return w_attr() * h_attr()		32	return w_attr() * h_attr()
	33	except TypeError:		33	except TypeError:
	34	pass		34	pass
	35	if w_attr is not None and h_attr is not None and (not is		35	if w_attr is not None and h_attr is not None and (not is
	>	instance(w_attr, Callable)) and (not isinstance(h_attr, Callable)):		>	instance(w_attr, Callable)) and (not isinstance(h_attr, Callable)):
	36	return w_attr * h_attr		36	return w_attr * h_attr
	37	return self		37	return self
	38	setattr(cls, '__abs__', __abs__)		38	setattr(cls, '__abs__', __abs__)
	39			39
	40	class _AbsDescriptor:		40	class _AbsDescriptor:
	41			41
	42	def __get__(self, obj, owner=None):		42	def __get__(self, obj, owner=None):
	43	if obj is None:		43	if obj is None:
	44			44
	45	def class_abs(instance):		45	def class_abs(instance):
	46	return instance.__abs__()		46	return instance.__abs__()
	47	return class_abs		47	return class_abs
	48	return obj.__abs__()		48	return obj.__abs__()
	49	setattr(cls, 'abs', _AbsDescriptor())		49	setattr(cls, 'abs', _AbsDescriptor())
	50	return cls		50	return cls

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