Sure, that's reasonable :)

For my case I have a usable workaround so not back porting it to < 3.8 is fine for me. My workaround will just leak the thread state if another thread is in __import__, which happens so rarely that it's not really a problem (but not rarely enough that blocking is acceptable!). The other cases changed in this PR would cause the same issue, but in practice for my application it's unlikely.

Thanks!