Any way to refactor this?

[John Salerno]

Bruno Desthuilliers wrote:

>  From a purely efficiency POV, there are some obviously possible 
> improvements. The first one is to alias visual.cylinder, so you save on 
> lookup time. The other one is to avoid useless recomputation of 
> -hatch_length and hatch_length*2.
> 
> def _create_3D_xhatches():
>     cy = visual.cylinder
>     for x in xrange(-axis_length, axis_length + 1):
>         if x == 0: continue
>         b = -hatch_length
>         c = hatch_length*2
>         cy(pos=(x, b, 0), axis=(0, c, 0), radius=hatch_radius)
>         cy(pos=(x, 0, b), axis=(0, 0, c), radius=hatch_radius)
>         cy(pos=(b, x, 0), axis=(c, 0, 0), radius=hatch_radius)
>         cy(pos=(0, x, b), axis=(0, 0, c), radius=hatch_radius)
>         cy(pos=(b, 0, x), axis=(c, 0, 0), radius=hatch_radius)
>         cy(pos=(0, b, x), axis=(0, c, 0), radius=hatch_radius)

Doesn't this call to "cy" still call the function multiple times?