[*.ipynb] blacken

[SamuelMarks]

Description

python -m black at 21.12b0

Brief Description of the PR:

Since July—psf/black#2357 —black now formats jupyter notebook (pip install black[jupyter]). So let's apply this.

Related: tensorflow/tensorflow#53360

Type of change

• Bug fix

Checklist:

• I've properly formatted my code according to the guidelines
  • By running Black + Flake8
  • By running pre-commit hooks

How Has This Been Tested?

N/A

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[seanpmorgan]

Per conversation in the bi-monthly grooming meeting, we're currently pinned to the formatting required in TF docs. Here is our CI:
https://github.com/tensorflow/addons/blob/master/.github/workflows/ci_test.yml#L98-L111

Definitely encourage the use of black and please tag us in the tensorflow/tensorflow docs issue to see if this can be supported for all TF repositories.

[seanpmorgan]

cc @MarkDaoust

[MarkDaoust]

Autoformatting the python-source in notebooks is nice.

To do this for real I'd want to run black from inside our current tool, since the json formatting is ~inline with what Colab saves.
That's possible but I'd have to update google's internal version of black. It's doable, but it would take some work.

[SamuelMarks]

@MarkDaoust Sure happy to help, just give me access (I've signed the Google NDA as I'm a GDE)