https://github.com/python/cpython/blob/d4cc553294a558d632a2f69523eb04fa8c51f1a7/Lib/annotationlib.py#L922 Presumably, this line is actually referring to the value that [ended](https://github.com/python/cpython/issues/124412#issuecomment-2377948706) [up](https://peps.python.org/pep-0749/#renaming-source-to-string) as `annotationlib.Format.STRING` instead. <!-- gh-linked-prs --> ### Linked PRs * gh-145889 <!-- /gh-linked-prs -->