[3.10] bpo-44490: Partially backport GH-26980's refactoring for easier bugfix backports#27203

Fidget-Spinner wants to merge 1 commit into

python:3.10python/cpython:3.10from

Fidget-Spinner:backport_union_refactoringFidget-Spinner/cpython:backport_union_refactoringCopy head branch name to clipboard