I started programming when I was nine, by myself. With game maker, which was (is?) a visual language to make games. I remember banging my head against the table trying to understand what a "real" number was. Even square roots were black magic back in the day.

Where I could learn the most was in code examples. They provided me new concepts I could poke, modify the values, and see the output, and hopefully after some time I would be able to understand how to use it.

There's a trend that everyone should understand how to code, and python is used as the língua franca for beginners, so providing a lot of examples helps people that do not intend to work as a developer understand new concepts. First you read about it, then you play with it for a while, and finally you'll get how to use it (and when to) in the future.

Not everyone thinks that about programmers. Only mathematicians and engineers. And programmers who think that about other programmers.