Playwright, a Python library, allows developers to essentially control the browser with a few lines of Python code to automate cross-browser testing for single-page web apps and Progressive Web Apps.

It's possible to take a step further with a browser extension, but this is a basic Python project that hosts a web page that you can drag and drop a file on for a visualizer.

With trinket.io, you can run python scripts in your browser. Even cooler is that they also run on your phone.

Microsoft plans to enable the Python and Ruby languages to be used for client-side development of rich Internet applications that leverage the companyu2019s Silverlight browser plug-in technology.

In the December update to Python in Visual Studio Code, developers can experiment with a new preview feature that lets them run and debug Python code in the browser.

Mozilla’s experimental Pyodide project is bringing a Python data science stack to the web browser, by compiling it to WebAssembly. Pyodide is a WebAssembly implementation of Python’s Numpy ...

Jul 04, 2025 12:55:00 Mozilla releases 'Wasm agents' that allow AI agents to be run directly in the browser without the need to install extra apps, and uses WebAssembly to run Python-based agents ...

Discover the game-changing VS Code extensions that every Python developer needs. Boost productivity, catch errors in real-time, and make coding more intuitive with these must-have tools.

Microsoft plans to enable the Python and Ruby languages to be used for client-side development of rich Internet applications that leverage the company’s Silverlight browser plug-in technology ...