get SMS notified when a process id no longer exists via python, fabric, gmail

gistfile1.py

import sys
from time import sleep
import smtplib
import getpass
from fabric.api import env, prompt, local

gmail_pw = getpass.getpass("enter your gmail password: ")
ps_id = prompt("enter process_id: ")
mysql_user = env.user

# you can send SMS using mobile carrier's sms gateway 
# http://en.wikipedia.org/wiki/List_of_SMS_gateways
sms_gateway_address = 'YOUR_SMS_GATEWAY_NUMBER'  
gmail_address = 'YOUR_GMAIL_ADDRESS'

def watch_ps():
    while True:
        try:
            ps = local('ps %s' % ps_id, capture=True)
            print ps
        except: # it Fatal Errors but not sure what the real error is.. 
            msg = "Your watched process id %s no longer exists" % ps_id
            print msg
            sms_msg(msg)
            sys.exit()
        sleep(5)

def sms_msg(msg):
    if gmail_pw:
        server = smtplib.SMTP( "smtp.gmail.com", 587)
        server.starttls()
        server.login(gmail_address, gmail_pw)
        server.sendmail(gmail_address, sms_gateway_address, msg)