[3.13] Provide a cross-reference to PEP 798 unpacking syntax (GH-152454)

[miss-islington]

(cherry picked from commit 8107c53)

Co-authored-by: Raymond Hettinger rhettinger@users.noreply.github.com
Co-authored-by: Rishit Agnihotri Twix1288@users.noreply.github.com

[read-the-docs-community]

Documentation build overview

📚 cpython-previews | 🛠️ Build #33339813 | 📁 Comparing 37ea7b3 against main (46d1809)

  🔍 Preview build  

465 files changed · + 1 added · ± 424 modified · - 40 deleted

+ Added

• library/asyncio-policy.html

± Modified

• about.html
• bugs.html
• copyright.html
• glossary.html
• index.html
• license.html
• py-modindex.html
• c-api/allocation.html
• c-api/apiabiversion.html
• c-api/arg.html
• and 414 more...

- Deleted

• improve-page-nojs.html
• improve-page.html
• _static/tachyon-example-flamegraph.html
• _static/tachyon-example-heatmap.html
• c-api/extension-modules.html
• c-api/interp-lifecycle.html
• c-api/lifecycle.html
• c-api/profiling.html
• c-api/sentinel.html
• c-api/slots.html
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[rhettinger]

PEP 798 is a 3.15 feature, so I don't think a 3.13 backport is warranted.

[bedevere-app]

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