Python Tutor with Philip Guo

This week, Kelly and Sean interview Philip Guo, associate professor of cognitive science at UC San Diego. As a grad student in 2010, Philip created Python Tutor, the most widely-used program visualization tool for education.

Using this tool, teachers and students can write Python programs directly in the web browser (without installing any plugins), step forwards and backwards through execution to view the run-time state of data structures, and share their program visualizations on the web. Over ten million people in more than 180 countries have used Python Tutor to visualize over 100 million pieces of code, often as a supplement to textbooks, lectures, and online tutorials.

• Python Tutor - Visualize Python, Java, C, C++, JavaScript, TypeScript, and Ruby code execution — Python Tutor helps people overcome a fundamental barrier to learning programming: understanding what happens as the computer runs each line of code. You can use it to write Python, Java, C, C++, JavaScript, and Ruby code in your web browser and see its execution visualized step by step.
• Repl.it - The collaborative browser based IDE — Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.