Pytml – Running Python in the Browser Without a Backend

Question

Pytml is a lightweight (~15KB) JavaScript library that acts as a bridge between Python and HTML via WebAssembly. It allows developers to embed and execute Python code directly in HTML pages using a single tag — no server, no complex JavaScript, no setup required.

The library leverages Pyodide (CPython compiled to WebAssembly) to run Python code locally in the user's browser. It automatically handles print() and input() redirection to the DOM, making it perfect for:

• Interactive educational tutorials

• Classroom coding demos

• Rapid prototyping of Python code in web pages

Pytml is open-source (Apache 2.0), listed on OpenForge.gov.in (India's official open-source platform), and has received a Zenodo DOI for academic citation.

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