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This book teaches you how to systematically transform slow Python code into high-performance compiled extensions using Cython. You will learn not only the syntax and features of Cython, but also the underlying mechanisms that make it fast, when to reach for it versus other optimization approaches, how to integrate it with C and C++ libraries, how to manage parallelism and memory, and how to build, test, debug, and distribute production-quality packages. Every chapter includes complete, working code examples designed to progress from simple demonstrations to realistic applications, so you can compile and run them immediately while building real expertise.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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