Python Pypi Package Builder

This is a comprehensive decision tree for building production Python packages from scratch to PyPI publication. It covers the entire workflow: choosing between src and flat layouts, picking a build backend (setuptools, hatchling, flit, or poetry), handling dynamic versioning with setuptools_scm, setting up type hints and linting, and configuring Trusted Publishing via GitHub Actions. The skill includes templates for all four major build systems, patterns for different package types (CLI tools, SDKs, framework plugins), and a scaffold script that generates the full project structure. Use this when you need to publish a real package and want to avoid the usual trial and error around pyproject.toml configuration and modern PyPA tooling.

skills.sh installs: 950
GitHub stars: 41K
last updated: Aug 21, 2026

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Install

$ npx -y skills add github/awesome-copilot --skill python-pypi-package-builder --agent claude-code

Installs into .claude/skills of the current project.

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Python PyPI Package Builder Skill

A complete, battle-tested guide for building, testing, linting, versioning, typing, and publishing a production-grade Python library to PyPI — from first commit to community-ready release.

AI Agent Instruction: Read this entire file before writing a single line of code or creating any file. Every decision — layout, backend, versioning strategy, patterns, CI — has a decision rule here. Follow the decision trees in order. This skill applies to any Python package type (utility, SDK, CLI, plugin, data library). Do not skip sections.