PEP 308: Obfuscated Nested Ternaries (INACAIS)

[Steven Taschuk]

Quoth Gerrit Holl:
  [...]
> I use the code to draw an arrow, [...]

Ah!

How about a computational strategy instead of a lookup?

def arrow(x, y):
	polyline = []
	def addpoint(x, y)
		polyline.append((15*x + 25, 15*y + 25))
	if x == y == 0:
		x, y = -1, -1
		for i in range(5):
			addpoint(y, -x)
			x, y = y, -x
	else:
		addpoint(-x, -y)
		addpoint(x, y)
		diagonal = (x*y != 0) # whether pointing to corner
		def wing(wingx, wingy):
			if diagonal:
				wingx = (x + wingx)/2
				wingy = (y + wingy)/2
			addpoint(wingx, wingy)
			addpoint(x, y)
		wing(-y, x) # left wing
		wing(y, -x) # right wing
	return polyline

-- 
Steven Taschuk             "The world will end if you get this wrong."
staschuk at telusplanet.net    (Brian Kernighan and Lorrinda Cherry,
                            "Typesetting Mathematics -- User's Guide")