Question

I opened a picture with PIL, but when I tried to use split() to split the channels I got following error:
AttributeError: 'NoneType' object has no attribute 'bands'

import Image
img = Image.open('IMG_0007.jpg')

img.split()
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)

/home/blum/<ipython console> in <module>()

/usr/lib/python2.6/dist-packages/PIL/Image.pyc in split(self)
   1495         "Split image into bands"
   1496 
-> 1497         if self.im.bands == 1:
   1498             ims = [self.copy()]
   1499         else:

AttributeError: 'NoneType' object has no attribute 'bands'

Answer 1

With googling I found this comment on SO, stating that PIL is sometimes ‘lazy’ and ‘forgets’ to load after opening. So you have to do it like this:

import Image
img = Image.open('IMG_0007.jpg')
img.load()
img.split()

Please +1 also the original comment! This person did the real work.