/usr/share/doc/python-notify2/examples/multi-actions.py is in python-notify2 0.3-3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52  | #!/usr/bin/env python
from gi.repository import Gtk
import notify2
import sys
# Ubuntu's notify-osd doesn't officially support actions. However, it does have
# a dialog fallback which we can use for this demonstration. In real use, please
# respect the capabilities the notification server reports!
OVERRIDE_NO_ACTIONS = True
def help_cb(n, action):
    assert action == "help"
    print("You clicked Help")
    n.close()
def ignore_cb(n, action):
    assert action == "ignore"
    print("You clicked Ignore")
    n.close()
def empty_cb(n, action):
    assert action == "empty"
    print("You clicked Empty Trash")
    n.close()
def closed_cb(n):
    print("Notification closed")
    Gtk.main_quit()
if __name__ == '__main__':
    if not notify2.init("Multi Action Test", mainloop='glib'):
        sys.exit(1)
    
    server_capabilities = notify2.get_server_caps()
    n = notify2.Notification("Low disk space",
                              "You can free up some disk space by " +
                              "emptying the trash can.")
    n.set_urgency(notify2.URGENCY_CRITICAL)
    n.set_category("device")
    if ('actions' in server_capabilities) or OVERRIDE_NO_ACTIONS:
        n.add_action("help", "Help", help_cb)
        n.add_action("ignore", "Ignore", ignore_cb)
        n.add_action("empty", "Empty Trash", empty_cb)
    n.connect('closed', closed_cb)
    if not n.show():
        print("Failed to send notification")
        sys.exit(1)
    Gtk.main()
 |