Here are some references: - Giles Thomas - Lessons Learned from Serving 1/4 million in-browser Python Consoles with Tornado - EuroPython2013 - Link: http

Here are some references: - Giles Thomas - Lessons Learned from Serving 1/4 million in-browser Python Consoles with Tornado - EuroPython2013 - Link: https://www.youtube.com/watch?v=U_qp8u_BH_E - Description: Giles is from PythonAnywhere, the author of [Interactive shells on Python.org](https://blog.pythonanywhere.com/83/) blog post. - PythonAnywhere uses: - SockJS: - Repo: https://github.com/sockjs - pty (Python built-in module) for handling pseudo-terminals (with pty.fork): - Docs: https://docs.python.org/3.7/library/pty.html - epoll (Tornado's IOLoop.add_handler for async): - Docs: https://www.tornadoweb.org/en/stable/ - Xterm.js: Terminal on the browser at https://xtermjs.org/ - Jessica McKellar: Building and Breaking a Python Sandbox - Pycon 2014: - Link: https://www.youtube.com/watch?v=sL_syMmRkoU - pysandbox (author recommends running Python in a sandbox, not the opposite) - Interactive Shells on Python.org: - Link: https://blog.pythonanywhere.com/83/ - CodeSandbox: Online web application editor (Angular, React, Vue, Vanilla JS) - Website: https://codesandbox.io/ - Repo: https://github.com/codesandbox/codesandbox-client - Kaggle: - Description: Kaggle's infrastructure and systems allow for arbitrary code execution and scoring. It would be good to check it out and see what they get right. - Kaggle Learntools: - Purpose: Check exercises and notebooks submitted by users - Link: https://github.com/Kaggle/learntools - Kaggle Docker: - Purpose: Kaggle Python docker image - Link: https://github.com/Kaggle/docker-python/ - Kaggle Infrastructure (Lessons Learned from Tens of Thousands of Kaggle Notebooks): - Link: https://www.youtube.com/watch?v=ENPBTl0uNOE - Miscellaneous Links: - Jinja has a sandboxed environment: - Link: https://github.com/pallets/jinja/blob/master/jinja2/sandbox.py