def pyTriplet_V0(n):
	"""returns a pythagorean triplets using generator expressions.
	x < y < z
	"""
	return ((x, y, z) 
	for x in range(1, n+1) 
	for y in range(x+1, n+1)
	for z in range(y+1, n+1) 
	if x**2 + y**2 == z**2)