Exactly what would throwing a scripting language in the mix help? It would only complicate things and prevent much IDE integration.
Being a heavy Maven user, Maven works great most of the time. A basic POM with a few dependencies is very easy to create. It also is an almost universal system. You can make your project in Maven and know that it will perform the exact same way in any IDE.
I will admit that more complex tasks do take a fair amount of googling. But for almost any problem, there's a maven plugin for it. If no Maven plugin exists for your problem, then I think your doing it wrong.
Maven provides structure and order. Scripting languages would just complicate things.
Remember though, with the maven exec plugin you can run any command you want, like invoking your python script.