Blacken one_dimensional.py (#1911)

* Blacken one_dimensional.py

* updating DIRECTORY.md

* Travis CI: Upgrade to Ubuntu 20.04 LTS Focal

Ubuntu 20.04 LTS (Focal Fossa) https://releases.ubuntu.com/focal

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

Christian Clauss committed 6y ago

8cb957f893e88f4590377e42db371cbe859bb63d

Parent: 0ef9dd3

Committed by GitHub <noreply@github.com> on 4/27/2020, 4:40:46 PM