Some quotes to provide context.

"I read several times that ideally I should avoid inheritance with ABCs and if I do, then from a standard class. That is, I should avoid creating a typical base and subclass construct that is used in a strategy pattern, for example."

"If I look …

Many people will proclaim that the eval() function is reprentnatly evil.

Feel free to skip the two rants.

Ugh.

A painful stretch of hours looking for a problem. Working on this: https://github.com/cloud-custodian/cel-python/wiki/Evaluation-Design. I need to address a performance problem and upgrade things generally to get them ready for 3.13 and 3.14.

You know how it goes, right?

I touched something …

Generally, I try to frown on Domain-Specific Languages. Often, a tidy set of related functions, or a group of class definitions with a few decorators can create something that's every bit as expressive as a DSL in native Python syntax.

There are a few cases where a DSL can be …

Recently, we talked about extracting data from complex relational databases. This is -- in a way -- another case study for my Unlearning SQL book. This is a description of what comes next after the "low-level" conversion. Warning: it's complicated.

BLUF: Take the time to get rid of SQL processing.

We're talking about extracting data from complex relational databases. This is -- in a way -- another case study for my Unlearning SQL book.

We're talking about extracting data from complex relational databases. This is -- in a way -- another case study for my Unlearning SQL book.

We're talking about extracting data from complex relational databases. This is -- in a way -- another case study for my Unlearning SQL book.

Let's talk about extracting data from complex relational databases. This is -- in a way -- another case study for my Unlearning SQL book.

In the process of writing Unlearning SQL, I had a need to extract SQL blocks from Python programs. Of course, I tried grep. It wasn't ideal.