Five years ago, when I left the VFX industry, Python was typically being used inside 3D software (the major packages like Maya, Houdini, Nuke, etc. added Python APIs 8-10 years ago, in-house simulation engines also have Python APIs), and for "pipeline" development - asset management, render farm management, etc.
Here are a some videos:
http://www.pyvideo.org/video/3044/amanda-a-new-generation-of-distributed-services (or http://www.youtube.com/watch?v=bPNGn1XHCKw, because pyvideo.org is closing soon)
Looking at current job postings, that's still the case. Nowadays the bigger VFX shops have branches in multiple countries, so a lot of work has been put to allow pipelines to facilitate distributed work. The expectations for what's possible to do with CGI have also grown tremendously, plus there is the transition from 2K to 4K. That means even bigger render farms, even more disk storage required, and of course higher expectations about artist productivity.
Python is very popular in the "sister" gaming industry as well.
Even though VFX-heavy movies have done extremely well at the box office for many years, there is persistent talk that the current situation with ever-decreasing margins for the VFX vendors is unsustainable. Quite a few of them have gone bankrupt in recent years, including shops which had won Oscar for VFX, like Rhythm & Hues (there was a scandal at the 2013 Oscars and an uproad in the VFX industry). Some VFX veterans are moving to alternative fields like virtual reality. Using Python for virtual reality development could be an interesting topic.
Another interesting topic could be Python (and technical skills in general) and the coveted job stability in the VFX industry - artists typically have to move a lot more often around the world to find work than developers (R&D coders and pipeline TDs). There are a lot of young people who want to work in VFX (or the gaming industry), some are spending a lot of money in CG programs only to find that the competition for a single job spot is huge. Candidates with technical chops have the advantage. The 2 main languages in VFX/gaming are Python and C++ and we all know in which language you can become productive more quickly.