title: PIL attribute error
body: <p>I tried to do a scrip with Pillow but i have a instance method error
  the code is something like that</p>
  
  <pre><code>import StringIO
  import subprocess
  from PIL import Image
  command = "fswebcam -q --no-info --no-banner --jpeg -d /dev/video0 -i 0 -r 100x75 -"
  imageData = StringIO.StringIO()
  imageData.write(subprocess.check_output(command, shell=True))
  imageData.seek(0)
  im = Image.open(imageData)
  print buffer1[1,1]
  </code></pre>
  
  <p>and when i tried to execute them i get </p>
  
  <pre><code>File "prueba.py", line 17, in main
      print im[1,1]
    File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 528, in __getattr__
      raise AttributeError(name)
  AttributeError: __getitem__
  </code></pre>
  
  <p>so what is wrong?
  thanks in advance</p>