PyScript lets you run Python scripts right in the browser, side by side with JavaScript, with two-way interaction between your code and the web page. Created by Anaconda and launched in April 2022 ...

JavaScripthon focuses strictly on translating Python 3.5 and later code to JavaScript, without trying to provide full in-browser support as per projects like Brython.

In the end, the original Python file contains the changes added by GPT-4. The code is available on GitHub , and the developer says the technique could be applied to other programming languages.