Scaling Open Source Up and Down — Glyph Lefkowitz (PyBay 2025)

I've maintained a variety of open source libraries for 25 years now. Some of these libraries are extremely popular. Some are downloaded millions of times per month; some thousands of times, some tens of times. The experience at these different scales is very different. Some skills are seamlessly transferrable, but other habits need to be opposite at different extremes of the spectrum.What do you need to start a project? And how should it change as your audience grows? For more information, see https://pybay.org/ Follow us on LinkedIn   / pybay  

No, seriously, why don't we use better testing tools — Zac Hatfield Dodds (PyBay 2025)
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No, seriously, why don't we use better testing tools — Zac Hatfield Dodds (PyBay 2025)

The Long Hello World — Noah Kantrowitz (PyBay 2025)
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The Long Hello World — Noah Kantrowitz (PyBay 2025)

Do It Yourself Demystifying the Magic of Dataclasses — Brett Slatkin (PyBay 2025)
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Do It Yourself Demystifying the Magic of Dataclasses — Brett Slatkin (PyBay 2025)

Visualizing large graphs and AI embeddings with ease — Nikita Rokotyan (PyBay 2025)
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Visualizing large graphs and AI embeddings with ease — Nikita Rokotyan (PyBay 2025)

Events are the Wrong Abstraction — Mason Egger (PyBay 2025)
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Events are the Wrong Abstraction — Mason Egger (PyBay 2025)

Guardrails An alternative view of safely working in Python — Christopher Neugebauer (PyBay 2025)
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Guardrails An alternative view of safely working in Python — Christopher Neugebauer (PyBay 2025)

Just because AI can write your tests  - should it? — Pamela Fox (PyBay 2025)
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Just because AI can write your tests - should it? — Pamela Fox (PyBay 2025)

Out of the Frying Pan/Into the Fire -Multiprocessed code to Free Threading — Lisa Roach (PyBay 2025)
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Out of the Frying Pan/Into the Fire -Multiprocessed code to Free Threading — Lisa Roach (PyBay 2025)

Taming LLMs with Pydantic Parsing, Validating, and Guarding output — Manish Sinha (PyBay 2025)
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Taming LLMs with Pydantic Parsing, Validating, and Guarding output — Manish Sinha (PyBay 2025)

Why Your Async Code Might Be Slower and How to Fix It  —  Aastha (PyBay 2025)
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Why Your Async Code Might Be Slower and How to Fix It — Aastha (PyBay 2025)

The Zen of the Bronze Layer Ingestion of Data with Unstable Schema — Aaron Wiegel (PyBay 2025)
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The Zen of the Bronze Layer Ingestion of Data with Unstable Schema — Aaron Wiegel (PyBay 2025)

AI, IP, and Your Code What Developers Need to Know — Alla Barbalat (PyBay 2025)
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AI, IP, and Your Code What Developers Need to Know — Alla Barbalat (PyBay 2025)

Architecting Real World Complex Systems in Python — Daniel Hulse PyBay 2025
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Architecting Real World Complex Systems in Python — Daniel Hulse PyBay 2025

Talk to Your Chess Games with Python + LLMs — Indrajit Rajtilak (PyBay 2025)
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Talk to Your Chess Games with Python + LLMs — Indrajit Rajtilak (PyBay 2025)

Closing Remarks — Chris Brousseau (PyBay 2025)
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Closing Remarks — Chris Brousseau (PyBay 2025)

Welcome & Opening Remarks — Chris Brousseau (PyBay 2025)
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Welcome & Opening Remarks — Chris Brousseau (PyBay 2025)

How Context Engineering reduced bugs by 50% in Python code review — Christopher Cassion (PyBay 2025)
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How Context Engineering reduced bugs by 50% in Python code review — Christopher Cassion (PyBay 2025)

Don’t Make Assertion Assumptions w/AI you still have to write unit tests — Liz Acosta (PyBay 2025)
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Don’t Make Assertion Assumptions w/AI you still have to write unit tests — Liz Acosta (PyBay 2025)

Beyond the Black Box Interpreting ML models with SHAP — Avik Basu (PyBay 2025)
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Beyond the Black Box Interpreting ML models with SHAP — Avik Basu (PyBay 2025)