Does anyone else in your shop have such a good handle on Python? If not, what will they do if you leave or get hit by the proverbial bus?
Python programmers aren't hard to find, and most code is fairly easy to read and maintain. It's more of OSS/Linux programming language, but there's a large number of users on Windows and almost all of the third party libraries work on Windows as well.
I use Python for data analysis and utilities, it's another tool in my kit alongside Visual Studio and SQL Server. I'm also co-leader of the local Python User Group.