title: GUI (to input and output matrices)?
body: <p>I need to create a GUI to input data into a matrix or table and read this form data.<br>
  The perfect solution is to restrict the input form to allow only <code>float</code>.<br>
  For example:</p>
  
  <p><code>A=[[1.02,-0.25,-0.30,0.515],[-0.41,1.13,-0.15,1.555],[-0.25,-0.14,1.21,2.780]]</code></p>
  
  <p>Questions:  </p>
  
  <ol>
  <li><p>What can I use?<br>
  Tkinter does not have tables and wxPython is not supported in Python 3.3.2  </p></li>
  <li><p>How about PyQt4?<br>
  Maybe you can give some example on how take data from table in <code>[[],[],[]]</code>?<br>
  Anyone has ideas?</p></li>
  </ol>
  
  <p>Thanks</p>