Uploaded August 2026 | Updated September 2026, 2 weeks ago

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[EuroPython 2026 - S3A on 2026-07-17]
🎤 *Breaking changes – not great, not terrible by Jan Musílek*
🔗 https://ep2026.europython.eu/session/breaking-changes-not-great-not-terrible

📝 Abstract:
Do you maintain a Python library, REST API or any other user-facing interface? Breaking changes are frowned upon, but from a a certain project size, they become unavoidable.

How do you make the breaking changes manageable? How should you version your package / API? Should you put an upper bound on your dependencies?

We'll discuss deprecation, forward and backward compatibility, upgrade strategies and more, illustrated on real-world examples. Our main focus will be on API changes of Python libraries, but the principles are widely applicable.

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