Jupyter®

I hope I am not breaking any rules...

Here are links which can help anyone practice and test computer programs and many other lab activities...

Jupyter® : https://jupyter.org/    (no signup/login required at the moment)

IBM® Skills Network™ : https://www.ibm.com/services/learning/ites.wss/zz-en?pageType=page&c=a0011023    (requires IBM® ID to signup/login)

Google® Colaboratory™: https://colab.research.google.com/notebooks/welcome.ipynb#recent=true (optional using Google® Account for signup/login)