This is a watchr config script that watches all the Python files in the directories specified by the "watch" command. You can specify one for each Django app in your project.

watchr.rb

require "ruby-growl"

watch ('project/(.*).py') {|md| code_changed "#{md[0]}"}

def code_changed(file)
    # Get the path of the file that changed
    dir = File.dirname(file)
    test(dir)
end

def test(path)
    result = `/usr/bin/python #{path}/tests.py 2>&1`
    growl result rescue nil
end

def growl(message)
    puts(message)
    message = message.split("\n");

    growlnotify = `which growlnotify`.chomp

    title = message.find { |e| /FAILED/ =~ e } ? "FAILED" : "PASS"
    
    if title == "FAILED"
        image = "~/.watchr_images/fail40.png"
        info = message.find { |e| /ERROR/ =~ e }
        priority = 2
    else
        image = "~/.watchr_images/pass.png"
        info = "Tests pass, carry on ..."
        priority = 0
    end

    g = Growl.new "127.0.0.1", "Watchr", ["ruby-growl Notification"]
    g.notify "ruby-growl Notification", title, info, priority

end