Python might be the most popular programming language in the world, but unlike other frontrunner JavaScript, you can't run Python code in the browser.

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 ...

For now, it’s best to assume threading in Python, by default, won’t give you parallelism. Python does include another native way to run a workload across multiple CPUs.