See "We have an ancient Python2 CGI script -- what do we do?" The previous post in this series provides an overview of the process of getting rid of legacy code.

Here's some code. I know it's painfully long; the point is to provide a super-specific, very concrete example of what …

This was a shocking email: the people have a Python 2 CGI script. They needed advice on Python 2 to 3 migration.

Here's my advice on a Python 2 CGI script: Throw It Away.

A great deal of the CGI processing is part of the wsgi module, as well as …

I need to rewrite Stingray Reader. This project handles a certain amount of file processing using a schema to assure the Logical Layout is understood. It handles several common Physical Formats:

• CSV files where the format is extended by the various dialects options.
• COBOL files in ASCII or EBCDIC.

The …

I don't get many of these "I have code that doesn't work" requests. But I do see them once in a great while.

It might be something like the following two-part explanation with a following question.

I have this code

from base64 import b64encode
def some_func(message):
    msg = b64encode(message …

See 9 Reasons Why Python Is Weird For C++ Developers.

I'm often bothered by inter-language comparisons. Mostly because programming languages -- except in the most abstract way -- aren't really very comparable. At the Turing Machine level the finite state automata are comparable, but that reductionist view (intentionally) eliminates all the expressive …

A fascinating question.

... I'm baffled by the amount of books you've published over the course of time. Currently Reddit suggests that I use Building Skills in Python under Beginner's section, but it looks quite outdated. So back and forth, I found your Building Skills in OO on GitHub Page and …

An interesting tweet. The roadmap has three sections. I'm not sure this is actually complete, or even grouped correctly. It is a very good list of topics.

https://twitter.com/prasoonpratham/status/1408435475426254849?s=11

"Here's a complete roadmap of topics to master Python."

The thread, however, seems no longer …

The SOLID design principles beat the design boundary issue to death. Here are the principles in my preferred order. (See https://www.linkedin.com/learning/learning-s-o-l-i-d-programming-principles)

1. Interface Segregation -- minimize the boundaries. Do this first.
2. Liskov Substitution -- keep the boundaries consistent. Do this for hierarchies.
3. Open/Closed -- keep the boundaries stable …

https://www.pythonpodcast.com/sqlfluff-sql-linter-episode-318/

See https://slott56.github.io/replacing-a-spreadsheet/. This document is really exciting (to me).

This is still shaky -- I'm still learning -- but it's a very cool combination of Python components sympy and Jupyter Lab. As a bonus, Jupyter{Book} appeals to me as a writer. There's an aspect of literate programing …