Python 3 is the current major series of the Python programming language, a high-level, dynamically typed, interpreted language emphasising readability and a large standard library. It is the dominant language for machine learning, data science, automation, and robotics scripting, supported by an extensive ecosystem of scientific and AI packages. Python 3 introduced Unicode-by-default strings and other breaking changes relative to the discontinued Python 2 series.
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- Its strengths are readability, rapid development, and a rich ecosystem (NumPy, PyTorch, asyncio). Trade-offs include the Global Interpreter Lock limiting CPU-bound threading and interpreter overhead, mitigated in practice by C-extension acceleration and multiprocessing.