pyodide-pack

Python package bundler and minifier for the web

Pyodide-pack aims to reduce the size and load time of Python applications running in the browser using different strategies:

Minification of the source code via AST rewrite
Transformation of the source code into a different format such as Python bytecode (.pyc files)
Dead code elimination, by removing unused Python modules (detected at runtime)

Each of these approaches have different tradeoffs, and can be used separately or in combination.

Install

pyodide-pack requires Python >=3.13 and can be installed via pip:

pip install pyodide-pack

(optionally) For elimation of unused modules via runtime detection, run Node.js, needs to be installed together with Pyodide 0.28.0a3 and later:

npm install pyodide@">=0.28.0a3"

For Python wheel minification via AST rewrites, run,

pyodide minify <path_to_dir_with_py_files>

See the documentation at pyodide-pack.pyodide.org for more details.