In addition to executing code embedded in HTML, it's also possible to add a code editor directly into an HTML page using the py-repl tag so that you can input code and execute it, as shown below.

In the head section of your page, add a script area with the specified function outline within it as follows: The code to get the URL variables and populate them in the text fields will appear ...

To create a simple script like this, you would start vim with a command like “vim myscript”. Press “i” to get into input mode and then enter the text shown.