python-packaging

# Python Packaging

Quick reference for building and publishing Python packages with UV and modern build tools.

## When This Skill Applies

- Building Python packages (wheels, sdists)
- Publishing to PyPI or private indexes
- Package versioning
- Build system configuration
- Editable installations

## Quick Reference

### Building Packages

```bash
# Build package
uv build

# Build specific formats
uv build --wheel
uv build --sdist

# Output location: dist/
```

### Publishing

```bash
# Publish to PyPI
uv publish

# With token
uv publish --token $PYPI_TOKEN

# To Test PyPI
uv publish --publish-url https://test.pypi.org/legacy/
```

### Package Structure

```
my-package/
├── pyproject.toml
├── README.md
├── LICENSE
├── src/
│   └── my_package/
│       ├── __init__.py
│       ├── __version__.py
│       └── main.py
└── tests/
```

## pyproject.toml Configuration

```toml
[project]
name = "my-package"
version = "0.1.0"
description = "A great package"
readme = "README.md"
requires-python = ">=3.11"
license = {text = "MIT"}
authors = [
    {name = "Your Name", email = "you@example.com"}
]
keywords = ["python", "package"]
classifiers = [
    "Development Status :: 4 - Beta",
    "Intended Audience :: Developers",
    "Programming Language :: Python :: 3",
    "Programming Language :: Python :: 3.11",
]

dependencies = [
    "requests>=2.31.0",
]

[project.optional-dependencies]
dev = ["pytest", "ruff", "mypy"]

[project.urls]
Homepage = "https://github.com/user/my-package"
Documentation = "https://my-package.readthedocs.io"
Repository = "https://github.com/user/my-package.git"
Issues = "https://github.com/user/my-package/issues"

[project.scripts]
my-cli = "my_package.cli:main"

[build-system]
requires = ["uv_build>=0.9.2,<0.10.0"]
build-backend = "uv_build"
```

## Versioning

```toml
[project]
version = "0.1.0"  # Manual versioning

# Dynamic versioning (from git tags)
dynamic = ["version"]

[tool.uv]
version-provider = "git"
```

## Entry Points

```toml
[project.scri