It's hard to write shameless promotional material.

I already wrote the books, isn't that bold enough?

It isn't, though.

Packt’s Head of Product, Oli Huggins, said: “We believe in helping to serve and support the global developer community. By selling our eBooks and Videos for $5, we hope to …

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

This puts the focus on a few important set operations.

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 …

For the author, a book is a journey.

Writing something new, the author describes a path the reader can follow to get from -- well -- anywhere the reader might be to the author's suggested destination. Not everyone makes the whole trip. And not everyone arrives at the hoped-for destination.

Second editions …

This is your "why wait" invitation.

Advanced copies will be available.

IF.

And this is a big "if".

You have to write a blurb.

I'll be putting you in contact with Packt marketing folks who will get you your advanced copy so you can write blurbs and reviews and -- well …

At this point, we're closing in on 9/13 (70%) of the way through the 2nd edition rewrite.

Important changes.

1. Type Hints
2. Type Hints
3. Type Hints

First.

Every single class, method, or function has to be changed to add hints. Every. Single. One. This is kind of huge. The book …