Send errors through notify-send, good for use with autokey scripts

notify_send.py

#!/usr/bin/env python
import os
from subprocess import Popen

"""
Notify users via notify-send in gnome-shell, if sending an error use is_error=True
Edit service_title with the desired title notify-send will use when sending msg
"""
def notify_msg(msg, service_title="Your service here", is_error=False):
    # Determine which level we should write to
    # Critical gives us a red '!'
    if not is_error:
        urgency = 'normal'
    else:
        urgency = 'critical'
    # Check to see if notify-send even exists first
    if os.path.isfile('/usr/bin/notify-send'):
        # Send an error message with notify-send
        notify_send = [
            "/usr/bin/notify-send",
            "-u", "{}".format(urgency),
            "{}".format(service_title),
            "{}".format(msg)
            ]
        Popen(notify_send)
    else:
        # We'll log via print for debug, but do nothing since
        # notify-send doesn't exist
        print 'WARNING: notify-send was not found, unable to send errormsg in gui'
        pass