Nautilus Python extension to show first line of README file under current directory.

show-readme.py

from gi.repository import Gtk, Nautilus, GObject
import urllib, urlparse

class LocationProviderExample(GObject.GObject, Nautilus.LocationWidgetProvider):
    def __init__(self):
        pass
    
    def get_widget(self, uri, window):
        path = urllib.url2pathname(urlparse.urlparse(uri).path)
        with open(path+'/README', 'r') as f:
            readme = f.read().splitlines()

        vb = Gtk.VBox()
        bar = Gtk.InfoBar()
        vb.pack_start(bar, False, False, 0)
        bar.set_message_type(Gtk.MessageType.INFO)
        bar.get_content_area().pack_start(
                Gtk.Label(readme[0]),
                False, False, 0)
        vb.show_all()
        return vb