[Image-SIG] bug in PIL 1.1.7 Image.split()

[Fredrik Lundh]

Good catch. The breakage is caused by a 1.1.7 fix that treats
single-band images as a special case; unfortunately, the fix checks
that attribute before actually loading the image...  I'll provide a
patch later, but you can of course work around it by adding an
explicit load to your code.

Thanks /F

On Thu, Dec 10, 2009 at 10:48 AM, Bill Janssen <janssen at parc.com> wrote:
> Just stumbled over this bug.  Shouldn't split() do a load() first?  This
> used to work in 1.1.6.
>
> Bill
>
> % python
> Python 2.5.1 (r251:54863, Feb  6 2009, 19:02:12)
> [GCC 4.0.1 (Apple Inc. build 5465)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import Image
>>>> Image.VERSION
> '1.1.7'
>>>> im = Image.open("/u/extensions/vCardParser/vcardimage.png")
>>>> im.mode
> 'RGBA'
>>>> im.size
> (200, 138)
>>>> im.split()
> Traceback (most recent call last):
>  File "<stdin>", line 1, in <module>
>  File "/Library/Python/2.5/site-packages/PIL/Image.py", line 1497, in split
>    if self.im.bands == 1:
> AttributeError: 'NoneType' object has no attribute 'bands'
>>>>
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