The 5th Edition of _<I>Python Pocket Reference_</I>.  At 260 pages, it's
much more useful than its 80-page _<A HREF="1998 PyRef1E Book.jpg.html">genesis_</A>,
and the "Pocket" still applies in the era of Pro, Max, and Ultra phones.

People with lots of language experience may be able to pick up Python 
with this book alone, though that's not the audience that arose 
with the explosion of tech.  Both this and LP5E also cover the majority
of Python in common use today, but not the esoteric tweaks added since 
2014, like type hints and coroutines; most code doesn't need to care.