gh-150082: Lazily import modules within standard library

[clin1234]

• Issue: Lazily import modules within standard library #150082

[hugovk]

Ruff lint errors like:

Error: Tools/i18n/pygettext.py:153:1: invalid-syntax: Cannot use `lazy` import statement on Python 3.13 (syntax was added in Python 3.15)

Can be fixed by updating it:

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6878a7d92e3..e378baf8930 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: e05c5c0818279e5ac248ac9e954431ba58865e61  # frozen: v0.15.7
+    rev: 5e2fb545eba1ea9dc051f6f962d52fe8f76a9794  # frozen: v0.15.13
     hooks:
       - id: ruff-check
         name: Run Ruff (lint) on Platforms/Apple/

[hugovk]

Or actually you'll need to update target-version to 3.15 in the relevant .ruff.toml config files. Some of them might need to stick to a lower version.

[pfmoore]

What's the point of lazily importing this? It's used on all of the public code paths through the module, and there don't seem to be any significant conditional branches which bypass the usage.

[hugovk]

This PR is way too big: 237 changed files. Please split it up, and it's probably worth providing justification in the issue first, for why each particular import was chosen in each particular module.

[ned-deily]

Please don't make this change.

[bedevere-app]

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

[StanFromIreland]

What is the benefit for doing this for tests?

[picnixz]

Considering there are too many files I am closing this. In addition the PEP explicitly stated that this should not be done IIRC, and this must only be addres on a case-by-case basis.