two ways to min/max an xyz coordinate list

	coords = [
	(-4.76519775390625, -2.480715036392212, -1.0),
	(-4.76519775390625, -2.480715036392212, 2.3569369316101074),
	(-4.76519775390625, 1.0000009536743164, 2.3569369316101074),
	(-4.76519775390625, 1.0000009536743164, -1.0),
	(2.8928911685943604, -2.480715036392212, -1.0),
	(2.8928911685943604, -2.480715036392212, 2.3569369316101074),
	(2.8928911685943604, 1.0000009536743164, 2.3569369316101074),
	(2.8928911685943604, 1.0000009536743164, -1.0)
	]
	def p(num): print("method", num)
	p(1)
	# rotate first
	rotated = zip(*coords[::-1])
	for (axis, _list) in zip('xyz', rotated):
	print(axis, 'min', min(_list), 'max', max(_list))
	p(2)
	# not rotated
	def extreme(func, i): return func(coords, key=lambda k: k[i])[i]
	for i in range(3):
	print('xyz'[i], 'min', extreme(min, i), 'max', extreme(max, i))

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