There are many excellent free resources for learning Python, but the Forest Wiki is the only free resource for teaching both Python and web development in the browser. View student's work remotely. No need to install software on student's computers. No shell.
Here is the teaching Python with Turtle Graphics demo.
Here is the cPython in the browser demo.
You can get it from the Docker Hub page.
There is no need to install any software on any student's computers. You just need to install the Forest Wiki Docker container. There is no need to access or learn a shell. Everything is done in the browser.