bpo-36829: Document test.support.catch_unraisable_exception() by vstinner · Pull Request #13554 · python/cpython

Might be worth suggesting gc.collect()

gc.collect() is not needed. Why do you want to force a GC collection?

It's not needed but it's often a good trigger of these sort of exceptions

Well, tests using the context manager expect an unraisable exception and fail if it's not the case.

Oh. By the way. I also had the idea of installing a custom sys.unraisablehook in regrtest and repeat all errors at exit. Maybe even make the test fail if at least one unraisable exception is logged.

Can you URL me to that commit?

It's not a commit but an idea :-) I didn't implement it.

Ok, :$ ping me when implemented!