PEP 557* versus the world

Python 3.7 will ship with a new module called dataclasses, which has been defined in PEP 557.

• What is this module?
• What are the problems that PEP 557 authors try to solve?
• What was the chosen design, and why?
• How does it compare against the tools that already exist?

This talk will deeply cover dataclasses, but also attrs, box, thingy, and others.

Post-conference notes: - Slides: https://slides.com/ramnes/pep-557 - Implementations and micro-benchmark: https://github.com/ramnes/pep-557-vs-the-world