Packaging and Distribution: Ship Your Python

Learning Objectives: After this lesson, you'll understand modern Python packaging with pyproject.toml, manage dependencies effectively, create and publish packages to PyPI, and structure professional Python projects.

Modern Python Packaging

Python packaging has evolved significantly. Let's understand the modern approach.

The Packaging Landscape

pyproject.toml

Project Structure

Package Initialization

Dependency Management

Understanding Dependencies

Lock Files

Virtual Environments

Building and Publishing

Building Your Package

Publishing to PyPI

CLI Applications

Configuration Management

Best Practices

Practice Exercise

Complete Package Setup

Key Takeaways

Essential Commands

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# Virtual environment
python -m venv .venv
source .venv/bin/activate

# Install in development mode
pip install -e ".[dev]"

# Build package
python -m build

# Upload to PyPI
twine upload dist/*

# Check package
pip install --index-url https://test.pypi.org/simple/ mypackage

Next Steps

In the next and final lesson, we'll bring everything together in a Capstone Project: Building a Production-Ready CLI Tool—applying all concepts from the course in a comprehensive project.

Ready for the final project? Let's build something real!