A Vim plugin to show cyclomatic complexity of Python code.

This script borrows heavily from Gary Bernhardt's Vim plugin pycomplexity, but the Python code that takes care of the analysis has been rewritten to use Radon.

The cyclomatic complexity of some PyLint code.

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Table of Contents

• Installation
  • Using Pathogen
  • Using Vundle
  • From a zip file
• Commands
• Configuration variables

Installation

Using Pathogen

Just make sure you have the following lines in your .vimrc:

call pathogen#infect()
syntax enable
filetype plugin indent on

And then install vim-radon as any other Pathogen plugin.

Using Vundle

Check that you have the following lines (in this order) in your .vimrc:

set nocompatible
filetype off

set rtp+=$HOME/.vim/bundle/vundle/
call vundle#rc

" let Vundle manage Vundle, required
Bundle 'gmarik/vundle'

Bundle 'rubik/vim-radon'

syntax enable
filetype plugin indent on

Then run :BundleInstall and you're ready to go.

From a zip file

1. Download the latest zip from Githu

2. Extract the archive into ~/.vim:

   unzip -od ~/.vim/ ARCHIVE.zip
   

   This should create the file ~/.vim/ftplugin/python/radon.vim.

You can update the plugin using the same steps.

Commands

Currently there is only one command, Radon, that will toggle the signs showing/hiding the complexity results.

Configuration variables

radon_always_on

By default, the code will not be analyzed until that behavior is toggled with the Radon command. If this option is set to a truthy value, the code will be always analyzed (when a file is read or saved).