PythonTutor is a good site. I had come across a few other similar ones earlier. codingbat.com is one: http://jugad2.blogspot.in/2013/02/codingbat-progress-gra

PythonTutor is a good site. I had come across a few other similar ones earlier. codingbat.com is one: http://jugad2.blogspot.in/2013/02/codingbat-progress-graphs-and-michael.html http://jugad2.blogspot.in/2013/02/codingbat-progress-graphs-... The Michael Jordan quote mentioned in that post is a good and inspiring one :) I recommend those sites to programming beginners who sometimes ask me for resources about Python - but only to start and/or as a supplement. Nothing can make up for getting the full experience of using Python (or any language) in a desktop computer environment, command line, tools, etc.