Hi Radhika,

To integrate any third party tool or service, first you need to study the architecture, how the service works. You also need a developer guide of that service.

There are lots of libraries are available in python, using them you can integrate any third party payment gateway with Odoo. But for that you have to study what kind of request you need to make and how to parse the response.

References: 1: SOAP, 2: HTTP, 3: Payment Gateway (Ogone) Modules