Working on a new book. Fun stuff. It's going to cover Python 3.9.

I'm adding the type hints material. And that means PEP 585. Which means type hints for generics can use the generic types. We can use list[int] instead of List[int] and avoid from typing import …

Yes, that's what the email said.

I was -- well -- shocked. Too shocked to be polite. Content Warning: much snark follows.

This is glorious.

There was this sort of awkward shoving match between typing and collections.abc. Both had generic type definitions and it was -- often -- unclear how to use them.

See PEP 585. Now they are all unified into a much happier family.

And. We wind up writing things like …

Working on revisions to a book. Fun stuff. See https://www.packtpub.com/product/python-3-object-oriented-programming/9781849511261 I may have the privilege of working with Dusty.

I've been using mypy for all my 2nd edition changes, but not in --strict mode.

I've decided to ramp things up, and switch to strict …

I am not patient. I have been dismissed as one who does not suffer fools gladly.

This is a bad attitude, and I absolutely suffer from it. No denials here. I'm aware it limits my ability to help the deeply confused.

My personal failing is not being patient enough to …

Check out https://www.pythonpodcast.com/steven-lott-learn-to-code-episode-283/. This was a fun conversation on Python and learning.

We didn't talk about my books in detail. Instead, we talked about learning and what it takes to get closer to mastery.

It's a thing I worry about. I suspect other writers worry about …

See https://opendatascience.com/removing-items-from-a-set-remove-pop-and-difference/

This puts the focus on a few important set operations.

Python 101, by Michael Driscoll. 545 pages, available from leanpub.com in a variety of formats. Available soon in hardcover.

The modern Python programming language is a large topic. A book on a programming language has to be seen as a collection of several large topics.

At its core, a …

Most of the things that got cut were (to me) obviously obsolete. For example, replacing collections.namedtuple with typing.NamedTuple seemed like a clear example of obsolete. A reviewer really thought I should skip all NamedTuple and use frozen data classes.

More important are some things that I learned about …

See https://towardsdatascience.com/why-python-is-not-the-programming-language-of-the-future-30ddc5339b66.

This is an interesting article with some important points. And. It has some points that I disagree with.

• Speed. This is a narrow perspective. numpy and pandas are fast, dask is fast. A great many Python ecosystem packages are fast. This complaint seems to be …