title: IDLE and matplotlib
body: <p>if I enter this code in Ipython notebook it works:</p>
  
  <pre><code>plt.scatter(x,y)
  </code></pre>
  
  <p>but if enter it in python IDLE then I get this error:</p>
  
  <pre><code>&lt;matplotlib.collections.PathCollection object at 0x0000000007957908&gt;
  </code></pre>
  
  <p>Do you have any idea why?</p>
  
  <p>Thanks a lot.</p>