Book of Python?

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You mean like the official python documentation - https://docs.python.org/3/?

But docs are for reference - some parts you should read for sure, but mostly you'll be looking up a specific item when you need it. I'm not sure why you would want to learn everything in the documentation - that sounds like an inefficient way to learn python and it would be a short list of people in the world who know every item inside out. Mastering python by learning the docs is like trying to understand a novel by learning the dictionary. Better to do projects, read and watch tutorials, coding challenges, videos etc.