Is try-except slow?

John Machin sjmachin at lexicon.net
Wed Sep 3 03:45:28 CEST 2008


On Sep 3, 11:00 am, process <circularf... at gmail.com> wrote:
> how could I do getpixel once when x and y s changing?

I was not referring to *calling* im.getpixel, I was referring to
looking up getpixel as an attribute of im. How? See below.
>
> anyway I rewrote and saw I did a lot of stupid stuff. this is fast:
> def getPixels5(fileName):
>     im = PIL.Image.open(fileName)
>     colors = []
>     r, c = im.size
      im_getpixel = im.getpixel
>     for y in range(0, c):
>         row = []
>         for x in range(0, r):
>             color = im.getpixel((x,y))
              color = im_getpixel((x, y))
>             row.append(color)
>         colors.append(row)
>     return numpy.array(colors)
>
> but I don't need it anuyway apparently since there already was such
> methods :)




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