Add pre-commit for formatting & linting

[jGaboardi]

We could add in a .pre-commit-config.yml and setup.cfg for automated code formatting and linting. Also, add black, isort, flake8, and pyflakes to requirements, etc.

See an example of all pieces in mapclassify

• .pre-commit-config.yaml
• setup.cfg
• linting action performed prior to running tests

[knaaptime]

+1

[martinfleis]

What pyflakes do?

[jGaboardi]

I had thought that flake8 and pyflakes were needed for linting. Though maybe I'm mistaken?

[martinfleis]

Only flake8 as far as I know.

If you like Pyflakes but also want stylistic checks, you want flake8, which combines Pyflakes with style checks against PEP 8 and adds per-project configuration ability.

(https://pypi.org/project/pyflakes/)

[jGaboardi]

Well, then. I stand corrected.