pre-commit python linting

README.md

Globally add pre-commit hooks on all user's computers. Use prettier to automatically clean JS/CSS code, and throw errors for python code which doesn't meet flake8 rules.

One problem is flake8 needs to be available in the pre-commit path, which without adding globally I struggled with...

package.json

{
    "scripts": {
        "precommit": "lint-staged"
    },
    "lint-staged": {
        "*.{js,json,css}": ["prettier --write", "git add"],
        "*.py": "flake8"
    }
}