python-packaging

Create distributable Python packages with pyproject.toml and CI publishing workflows.

Updated Mar 3, 2026
One-click install
npx skills add https://github.com/jacexh/skills --skill python-packaging-jacexh
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Please help me install this Agent Skill.
Skill: python-packaging
Source: https://github.com/jacexh/skills/tree/main/skills/python-packaging
Command: npx skills add https://github.com/jacexh/skills --skill python-packaging-jacexh

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Packaging and publishing Python projects involves many repetitive, error-prone steps—project layout, metadata, build backends, distribution formats, and CI publishing—making releases slow and fragile. This Skill consolidates best practices and concrete patterns so maintainers can produce reproducible builds, correct metadata, and reliable uploads to TestPyPI/PyPI or private indexes.

Core Features & Use Cases

  • Project layout recommendations: source (src/) and flat layouts, multi-package monorepos, and namespace package patterns.
  • Modern metadata and build: pyproject.toml examples following PEP 517/518/621, dynamic versioning, and build-backend configurations.
  • Distribution and publishing: build wheels and sdist, twine checks, TestPyPI validation, and GitHub Actions for automated releases.
  • Advanced scenarios: C extensions, package data inclusion, multi-architecture wheel builds, and editable installs for development workflows.
  • Use Case: Turn a library repository into a production-ready package with CI automation that builds artifacts, runs tests, and publishes on release.

Quick Start

Generate a complete pyproject.toml, recommended src/ layout, and a GitHub Actions workflow that builds wheels and uploads to TestPyPI for my library named "my-package".

Frequently Asked Questions about python-packaging

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a distributable Python package with pyproject.toml?

To create a distributable Python package, use pyproject.toml to define project metadata following PEP 517/518/621 standards, configure a build backend, and structure your code using the recommended src/ layout for reproducible builds.

What is the best way to build Python wheels and source distributions?

The best way to build Python wheels and source distributions (sdist) is by configuring a PEP 517 compliant build backend in pyproject.toml, which automates artifact generation and ensures consistent, reproducible package builds across different environments.

How do I automate Python package publishing to PyPI using GitHub Actions?

Automate Python package publishing by creating a GitHub Actions workflow that builds wheels and sdist, runs twine checks, validates uploads to TestPyPI, and then publishes releases to PyPI or private indexes automatically on release tags.

Does Python packaging support multi-package monorepos and namespace packages?

Yes, modern Python packaging supports multi-package monorepos and namespace package patterns by configuring pyproject.toml correctly, allowing maintainers to manage multiple distributable libraries within a single repository structure.

How do I handle C extensions and multi-architecture wheel builds for Python?

Handle C extensions and multi-architecture wheel builds by applying advanced packaging patterns that compile platform-specific binaries and include package data, ensuring your source distributions and wheels are compatible across target architectures.

Why use the src layout for Python packaging instead of flat layouts?

Use the src layout for Python packaging to prevent import errors during testing and ensure the installed package is evaluated rather than the local working directory, providing more reliable builds and editable installs for development workflows.