title: Use pylab to plot image returned from Scipy
body: <p>I'm working to migrate from MatLab to python in Sage.
  So I use these commands and I faced this error in Sage:</p>
  
  <pre><code>from scipy import misc
  
  l = misc.lena();
  
  import pylab as pl
  
  pl.imshow(l)
  </code></pre>
  
  <p>The Error or message (i don't know) is:</p>
  
  <pre><code>matplotlib.image.AxesImage object at 0xb80198c
  </code></pre>
  
  <p>And it doesn't show any image</p>