Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Python 3.9.0 is expected within a week: https://lwn.net/SubscriberLink/831783/44f4191759587fb7/
I'd tried a 3.9 build target a while back - but errors in other build-related packages made it fail. It might work now, and it'd be good to verify whether our build/unit-tests all work in Python 3.9.
So, here the Travis CI & Azure pipeline builds get added Python "3.9-dev" targets, to see if all's well.