I have to develop an application where I need to send SMS to the users on a particular action by the users. 
I have heard of kannel with PHP, is there some help for the same in Python as well or is there any other better open source sms gateway which I can use with my application? 
Please suggest.
Thanks in advance.
Typically you would use normal HTTP GET or POST requests against an SMS Gateway, such as Clickatell and many many others.
How to send SMS using Python/Django application?