The inline/inpage sample code under the Array Interpolation schemes heading is incorrect. However, the Source Code linked below the inline code is correct.

For example, see In[20]:

In [20]: imgplot = plt.imshow(resized, interpolation="nearest")

which links to image_tutorial-9.py.

This sample code assumes the users has followed the previous inline sample code:

In [16]: from PIL import Image
In [17]: img = Image.open('../_static/stinkbug.png')
In [18]: resized = img.thumbnail((64, 64), Image.ANTIALIAS) # resizes image in-place
In [19]: imgplot = plt.imshow(img)

As shown on In [18], the thumbnail function resizes the image in-place. This means that resized is an empty variable and cannot be passed into plt.imshow(). The inline sample code should instead follow the downloadable sample code and pass img into plt.imshow().