Pylint In Vagrant

Pylint is a great tool for keeping your Python code in order. When using Vagrant to develop an app inside a virtual machine, it is desirable to run Pylint inside the virtual machine. Pylint in Vagrant helps you do that.

Installation

Pylint in Vagrant installs like any other Python package, e.g., pip install pylint_in_vagrant. It provides a command pylint-in-vagrant.

Usage

Common uses of Pylint in Vagrant include running it from the command line, from pre-commit hooks and using it for developing Python applications for Sandstorm.

Command-line Use

After installing Pylint in Vagrant into your Python environment, note a few important values:

• the directory where your code appears inside the virtual machine,
• the directory where your Vagrantfile is located on your workstation and
• the path to Pylint inside the virtual machine.

If you have a Vagrantfile in the current directory, Pylint in your path and you want to lint a file at $HOME/path/to/python/module/file.py, then you can run pylint-in-vagrant pylint path/to/python/module/file.py.

Pre-commit Use

To use Pylint in Vagrant with pre-commit, add a configuration like this:

- repo: https://github.com/troyjfarrell/pylint_in_vagrant
  rev: v0.0.4
  hooks:
  - id: pylint_in_vagrant
    args: [/usr/local/bin/pylint]

The args list should include all arguments except for the list of files. It must include the path to Pylint.

Pre-commit With Sandstorm

To use Pylint in Vagrant with pre-commit to develop a Sandstorm application, try a configuration like this:

- repo: https://github.com/troyjfarrell/pylint_in_vagrant
  rev: v0.0.4
  hooks:
  - id: pylint_in_vagrant
    args: [--prefix=/opt/app, --vagrant-dir=.sandstorm, /opt/app/venv/bin/pylint]

You may need to adjust the path to Pylint or the --prefix if your code is in a different location.

How It Works

Pylint in Vagrant uses Vagrant's ssh command to run Pylint inside your virtual machine. You should use the command line arguments to specify the appropriate paths.