[rwb27]

This adds the UP ruleset to ruff which updates old code to take advantage of new features. It made a bunch of code changes, which I've checked - mostly importing things from the canonical place (e.g. Callable comes from collections.abc and not typing now), and also changes like Optional[T] -> T | None.

I think it does a few things that are useful, and also makes the code more self-consistent.

I notice it's removed a bunch of quotation marks from some type hints. This does not seem to displease either the test suite or mypy so I assume I was just being overly cautious by quoting them.

this is not ready for merge

This touches a lot of code. My process was:

• Turn on the UP ruleset
• Apply all fixes, including "unsafe"
• Manually check all changes
• Verify mypy and pytest still pass

That means all the automated changes have had one human review already. However, it's going to be a rebase nightmare. I suggest that, when we reach a point where we've got minimal open PRs, we re-do this PR and merge it quickly. I guess in principle one could apply the auto-fixes to every commit in one of the branches before rebasing, to minimise conflicts: I've not done that and feel like it will be painful even with automation, so it's probably best to minimise the number of times it happens...

[barecheck]

Barecheck - Code coverage report

Total: 97.42%

Your code coverage diff: -0.03% ▾

Uncovered files and lines

File	Lines
src/labthings_fastapi/actions.py	598-599, 612, 648-649, 850, 991-992, 997, 1000, 1048
src/labthings_fastapi/base_descriptor.py	184, 198-199
src/labthings_fastapi/client/__init__.py	65, 68-69, 264-267, 374, 474
src/labthings_fastapi/endpoints.py	104
src/labthings_fastapi/example_things/__init__.py	170
src/labthings_fastapi/outputs/blob.py	303, 949-950
src/labthings_fastapi/outputs/mjpeg_stream.py	195, 197, 200, 203, 231-233, 242-244, 264, 268-269, 306, 334, 410, 446
src/labthings_fastapi/properties.py	502, 520, 969, 992
src/labthings_fastapi/server/__init__.py	251, 260, 264, 328, 342-345
src/labthings_fastapi/server/cli.py	100, 161
src/labthings_fastapi/testing.py	163, 286
src/labthings_fastapi/thing.py	296, 368-370, 461
src/labthings_fastapi/thing_description/__init__.py	68, 77-78
src/labthings_fastapi/thing_description/_model.py	105
src/labthings_fastapi/utilities/__init__.py	112, 133, 147, 179, 187
src/labthings_fastapi/utilities/introspection.py	89, 99, 110, 166