I was just wondering what the advantage of using GDscript instead of Python for scripting. some problems with using GDscript would be to learn another language. GDscript also has fewer dedicated libraries for specific/special tasks.
Python is widely used all over the world and would be great for beginners. some implementations are made to sped up python such as pypy, cpython and cython. It is also a great choice for programming game A.I. due to their mature libraries in machine learning. It can also easily integrate server side contents for making MMOs
I've never used GDscript. I've always used C++ modules.