Relative to absolute imports, del lazy_import in .all files

[mkoeppe]

• Split out from Restructure sage.*.all for modularization, replace relative by absolute imports #37900

📝 Checklist

• The title is concise and informative.
• The description explains in detail what this PR is about.
• I have linked a relevant issue or discussion.
• I have created tests covering the changes.
• I have updated the documentation and checked the documentation preview.

⌛ Dependencies

[mkoeppe]

Already reviewed 6 months ago in #36676

[github-actions]

Documentation preview for this PR (built with commit e3bd5b0; changes) is ready! 🎉
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[jhpalmieri]

It looks good. As long as it passes tests, feel free to set a positive review on my behalf. Some all.py files do not have del lazy_import but they can be dealt with later as part of #36721.

[mkoeppe]

Some all.py files do not have del lazy_import but they can be dealt with later

Yes, here I have only picked those del lazy_import additions in files that had other changes already, to keep the PR smaller.

[mkoeppe]

Thanks (again) for the review. Tests pass (see Build&Test using Conda -- Build&Test is fixed in #37926 + #37988).

[jhpalmieri]

Some all.py files do not have del lazy_import but they can be dealt with later

Yes, here I have only picked those del lazy_import additions in files that had other changes already, to keep the PR smaller.

Right, but I also meant files like combinat/all.py which are changed here. But again, those can wait.

[mkoeppe]

Right, thanks.