[Marcan]

Maya has been supporting Python for a long long time, it even supports Python 3 now. There is no more need to use MELscript to develop tools for it anymore, even though some commands are run using the MELscript wrapper in Python, but even then it's very rare.

Pretty much all the tools I've developed in the past couple of years for AAA games have been almost exclusively made with Python.

One of them we even developed tools to be DCC agnostic, which means that they could run both in Maya and 3ds Max flawlessly.