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On the recordRead 9 Oct 202613 facts
Python Tutor
Python Tutor · founded 2010
Plans and prices
Free
Free
Free to use · Python, Java, C, C++, and JavaScript visualization
Read 9 Oct 2026 · pythontutor.com
On the record
- Creator
- The site says Python Tutor was created by Philip Guo in 2010.pythontutor.com · read 9 Oct 2026
- Embedding
- The site documents embedding a visualization in another webpage using an iframe.pythontutor.com · read 9 Oct 2026
- Execution limits
- The documented execution sandbox has no file or network access and limits runs to 1,000 steps for Python, Java, and JavaScript and about 300 for C and C++.pythontutor.com · read 9 Oct 2026
- Intended users
- The site describes uses for students debugging coursework, teachers explaining concepts, and programmers preparing for interviews.pythontutor.com · read 9 Oct 2026
- Languages
- The site supports Python, Java, C, C++, and JavaScript.pythontutor.com · read 9 Oct 2026
- Other limits
- The site guide says it does not support multi-file projects, package installation beyond the Python whitelist, or JavaScript event-loop and asynchronous visualization.pythontutor.com · read 9 Oct 2026
- Purpose
- Python Tutor lets users write code in a web browser and see a step-by-step visualization as it runs.pythontutor.com · read 9 Oct 2026
- Python limits
- Python execution is limited to a whitelist of common standard-library modules.pythontutor.com · read 9 Oct 2026
- Support
- The homepage links to a bug-report form and documentation on unsupported features.pythontutor.com · read 9 Oct 2026
- Teacher access
- Teachers and student teaching assistants can apply for free ad-free mode with added teacher features, subject to manual eligibility verification.docs.google.com · read 9 Oct 2026
- Visualizations
- It visualizes variables, objects, pointers, data structures, and stack frames.pythontutor.com · read 9 Oct 2026
