black fixes and Travis CI fixes (#2160)

* black format

* updating DIRECTORY.md

* fixes

* fixup! Format Python code with psf/black push

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

vinayak committed 5y ago

2d3d660155241113b23e4ed810e05479b2fc4bba

Parent: c534e77

Committed by GitHub <[email protected]> on 7/2/2020, 2:32:15 PM