You should be thinking about what's most widely used. What will your coworkers be able to collaborate in? Where will you be able to get the most support (forums, tutorials, even libraries)? This should be the only thing that matters for your first language, and in this case its clearly Python.

I think people spend way too much time worrying about the 'best', which makes sense because its a lot of work to learn your first language. It gets easier to switch though so better to just jump into the easiest and most supported.