Think Python (3rd Edition)
Free online book by Allen Downey introducing programming through Python — teaches computational thinking alongside language features, ideal for absolute beginners
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Architecture Patterns with Python
Free online book on applying DDD, ports and adapters, and event-driven architecture in Python — by the authors of the famous "Cosmic Python"
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Effective Python
125 specific ways to write better Python — covers Pythonic thinking, functions, classes, concurrency, and robustness
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High Performance Python
Practical guide to profiling, optimising, and scaling Python code — covers NumPy, Cython, asyncio, multiprocessing, and memory management in depth
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