This is very cool, every innovation helps. I wonder if it wouldn't be helpful for learning to add execution visualization, such as provided at http://www.python

This is very cool, every innovation helps. I wonder if it wouldn't be helpful for learning to add execution visualization, such as provided at http://www.pythontutor.com/visualize.html http://www.pythontutor.com/visualize.html (click "Visualize Execution")