Death to setup.py: The Modern Developer’s Guide to Python Packaging

📰 Medium · Python

Learn how to modernize Python packaging by replacing setup.py with PEP 517, pyproject.toml, and the 'src' layout for production-grade applications

intermediate Published 19 Jun 2026
Action Steps
  1. Migrate from setup.py to pyproject.toml using PEP 517
  2. Adopt the 'src' layout for organizing code
  3. Use tools like pip and setuptools to manage dependencies
  4. Test and validate the new packaging setup
  5. Deploy the application using the modernized packaging
Who Needs to Know This

Developers and DevOps teams can benefit from this guide to improve the packaging and deployment of their Python applications

Key Insight

💡 PEP 517 and pyproject.toml provide a more efficient and flexible way to manage Python packages

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🚀 Modernize your Python packaging with PEP 517, pyproject.toml, and 'src' layout! 🚀

Key Takeaways

Learn how to modernize Python packaging by replacing setup.py with PEP 517, pyproject.toml, and the 'src' layout for production-grade applications

Full Article

Title: Death to setup.py: The Modern Developer’s Guide to Python Packaging

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Published Time: 2026-06-19T05:50:30Z

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# Death to setup.py: The Modern Developer’s Guide to Python Packaging | by Thisara Dasun | Jun, 2026 | Medium

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## Why PEP 517, pyproject.toml, and the “src” layout are no longer optional for production-grade Python applications.

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