I have been following scikit-learn closely these days as I have been working on different machine learning algorithms. Thank you for making everything so simple. Your documents could be followed even by novice.

Now, when I was working with spectral clustering, I found your example of  Segmenting the picture of Lena in regions intuitive and wanted to try it. 

However, scipy has removed the scipy.misc.lena() module from their library, due to licensing issues. 

So, I request you to please update the code with any other image.

Regards,

Rajkiran Veldur