ruff compliance for TC

[bouweandela]

Description

Enable the ruff type checking rules. These rules are convenient because they allow automatically formatting the imports in such a way that circular dependencies from adding type hints are avoided.

#5625

Checklist

Important

The Iris core developers are here to help! If anything below is unclear, just post a comment asking for help 😊

• Included a What's New entry
• Incorporated type hints in any changed code
• Checked if tests need updating
• Checked if benchmarks need updating
• Checked if documentation needs updating
  • Docstrings (we love code examples!)
  • User Manual pages
• Checked if dependencies need updating
• Confirmed that the GitHub 'checks' on this PR are passing ✅
  (further reading)

---

Tip

Things you can trigger on this PR:

• Add this label to trigger benchmarks: benchmark_this Request that this pull request be benchmarked to check if it introduces performance shifts
• Visit this URL - swapping 9999 for this PR's number - to re-trigger the CLA check:
  https://cla-assistant.io/check/SciTools/iris?pullRequest=9999

[scitools-ci]

Templating

This PR includes changes that may be worth sharing via templating. For each file listed below, please either:

• Action the suggestion via a pull request editing/adding the relevant file in the SciTools/.github templates/ directory. ¹
• Raise an issue against the SciTools/.github repo for the above action if you really don't have 10mins spare right now. Include an assignee, to avoid it being forgotten.
• Dismiss the suggestion if the changes are not suitable for templating.

You will need to dismiss this review before this PR can be merged. Recommend the reviewer does this as their final action before merging, as this text will continually update as commits come in.

Templated files

The following changed files are templated:

• pyproject.toml, templated by SciTools/.github/templates/pyproject.toml

Footnotes

1. Include this text in the PR body to avoid any notifications about applying the template changes back to the source repo!
   @scitools-templating: please no update notification on: iris ↩

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.34%. Comparing base (c2ffc9b) to head (6048a60).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7203      +/-   ##
==========================================
+ Coverage   90.18%   90.34%   +0.16%     
==========================================
  Files          91       92       +1     
  Lines       25102    25335     +233     
  Branches     4706     4731      +25     
==========================================
+ Hits        22638    22889     +251     
+ Misses       1685     1675      -10     
+ Partials      779      771       -8     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[bouweandela]

Maybe this could be included in the template. Almost all issues can be fixed automatically by ruff, so the amount of work for adoption would be minimal.

I don't think this should be templated;

I believe the precedent we agreed upon when creating the templates is that we don't expect everyone to progress Ruff checks at the same speed, and so we'll leave everything ignored until the project leads get around to it.

I'll double check this with the team, and if I'm mistaken I'll adjust the template myself at a later date.

[ESadek-MO]

Thanks @bouweandela, all looks good to me, just one problem with the WhatsNew.

[ESadek-MO]

Thanks, look good now!