Implement PEP 810 #142349
Description
Linked PRs
- gh-142349: Implement PEP 810 - Explicit lazy imports #142351
- gh-142349: Fix build errors from PEP 810 #144726
- gh-142349: Fix refcount corruption in lazy import specialization #144733
- gh-142349: Add CODEOWNERS for lazy imports #144840
- gh-142349: Fix ast.unparse for lazy import statements #144893
- gh-142349: Move all lazy-imports-by-hand to use the new lazy keyword #144894