gistfile1.py

#!/usr/bin/env python3
import gi.repository
from gi.repository import Gio, GLib
import sys
import subprocess

session_bus                = Gio.BusType.SESSION
cancellable                = None
proxy_property             = 0
interface_properties_array = None
destination                = "org.freedesktop.Notifications"
path                       = "/org/freedesktop/Notifications"
interface                  = destination
method                     = "Notify"
application_name           = "inform"
id_num_to_replace          = 0
icon                       = "/usr/share/icons/Tango/32x32/status/sunny.png"
actions_list               = []
hints_dict                 = {}
display_milliseconds       = 5000
timeout                    = -1

command = sys.argv[1]

while True:
    title = command
    results = subprocess.Popen(command, shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
    text = results[0].decode('utf8') + "\n\n" + results[1].decode('utf8')

    connection = Gio.bus_get_sync(session_bus, cancellable)
    notify = Gio.DBusProxy.new_sync( connection, proxy_property, interface_properties_array, destination, path, interface, cancellable)
    args = GLib.Variant('(susssasa{sv}i)', ( application_name, id_num_to_replace, icon, title, text, actions_list, hints_dict, display_milliseconds))
    result = notify.call_sync(method, args, proxy_property, timeout, cancellable)
    id_num_to_replace = result.unpack()[0]