Preface
This book is part of The Python Crown, a set of short, focused guides that each take one Python idea and work through it with examples you can run.
Every code sample here was executed while the book was built. If a snippet is in the book, it ran and produced the output shown next to it.
How to read this book
Type the examples out rather than copying them. Keep a Python REPL or a scratch file open beside the book and change things as you go. Break the examples on purpose and see what happens.
Conventions
Fixed-width text is code: a value, a function name, or something you type.
Output blocks
A grey Output panel under a snippet shows exactly what that snippet prints.
Try it
"Try it" boxes suggest a small change to make before moving on.
Let's begin.