Packaging Ecosystem

How Python packages are built and published.

Intermediate

This is an overview — pick a sub-topic below.

Sub-topics (5)

The Python Package Index hosts packages as wheels (pre-built) and sdists (source).

Easy♥ 0🔖 0💬 0

One file declares metadata, dependencies and the build backend (hatchling, setuptools, flit, pdm-backend, maturin).

Intermediate♥ 0🔖 0💬 0

`python -m build` then `twine upload dist/*` — or `uv publish`.

Intermediate♥ 0🔖 0💬 0

Semantic versioning, pinned lock files (uv.lock, poetry.lock) and resolvers that find compatible versions.

Intermediate♥ 0🔖 0💬 0

Build binary wheels for every platform (cibuildwheel) and package C/C++ (scikit-build-core) or Rust (maturin) extensions.

Advanced♥ 0🔖 0💬 0

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