Siddhartha Gairola writes:

If you could assist me as to how I should proceed now.

Start at https://www.mail-archive.com/mailman-developers@python.org/. A couple of months' worth at first, then the last year or two. First, this question, and several other relevant questions, have been answered recently. Second, the archives provide background for understanding the current focus of development.

Then, it's important that you test any changes you make, both with unit tests and with a "live" installation. It doesn't need to go over the Internet -- just localhost is enough in most cases -- but you do need a real MTA (Postfix and Exim are supported and recommended) and later, for the Postorius and HyperKitty components, a WGSI-capable webserver (all the usual suspects will work; the Django internal testing server is not good enough).

Finally, for more hints on developing, you should look at http://wiki.list.org/DEV/Google_Summer_of_Code_2015 (the 2016 version is still under construction, but the generic hints you want are fully developed in last year's version).

Happy hacking!

Steve