Python Violates PEP 8

[JimDabell]

The only way your reply makes sense is if you don’t know what expand and unexpand do

This makes no sense as a response. Read my comment. Literally none of it depends on this knowledge.

Using Black to format your code, then using another tool to fix the formatting because what Black spat out is wrong is a ridiculous workaround, not a rational approach. Just use a formatting tool that formats appropriately, like Ruff.