The true is the official GitHub repository: github.com/fluentpython/example-code-2e . Clone it. Run it. Study it. Between that repo, the free YouTube talks, and a legal borrowing from your library, you will learn more Python than 90% of developers who download a frozen PDF and never open it again.
While the PDF isn't an exclusive GitHub product, the book has a very active official presence on the platform:
: Jupyter Notebooks containing examples from the book for interactive learning. Key Updates in the 2nd Edition
: Moving beyond "Python with an accent" (coding in Python using patterns from Java or C) to writing idiomatic, "Pythonic" code.