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Explore the implications of Python's removal of the Global Interpreter Lock (GIL) starting with Python 3.13 and learn how to make informed decisions between free threading and async programming approaches in this 25-minute conference talk from EuroPython 2025. Examine how PEP 703's implementation of true free threading and parallelism across multiple CPU cores changes the landscape for Python developers. Analyze the strengths and weaknesses of both threading and async programming models, understanding when each approach is most effective for different scenarios. Discover best practices for handling CPU-bound tasks with threads versus managing I/O-bound workloads with async programming. Gain practical insights into selecting the optimal concurrency model for specific use cases, enabling more efficient architectural decisions in Python projects. Understand the technical trade-offs and performance considerations that influence the choice between these two concurrency paradigms in the post-GIL era of Python development.
