add python linting to automated local pre-commit linter

[zoepage]

It would be great to add the Python linter to our automated pre-commit linter, so it would catch errors before the Travis build runs.

[karlcow]

This is dependent on the solutions retained for #1473

[karlcow]

@zoepage to clarify the goal of your issue. Do you mean this below?

The linter will block the commit if the code is not respecting the rules we defined?

flake8 has an option for installing the hook. https://flake8.readthedocs.io/en/latest/user/using-hooks.html

[zoepage]

@karlcow yes :)

[rheaparekh]

I'd like to work on this. Should I go ahead with using flake8 for linting?

[karlcow]

@rheaparekh Let first define the tules in #1473 So not ready yet for working on this. But because you are pushing for it, I will take a look this week on how to make progress on #1473.