I'm learning python3 right now, advises or exercises to practice? I want to learn machine learning. I'm developng on elixir for now. But I hear good stuff about python.

If you are learning Python specifically for ML, then look up blogs/courses online that teach Python specific to ML and you learn the basics along the way.
Other than that, familiarize yourself with Jupyter Notebook. Will come in really handy for ML.
Finally, welcome to the awesome world of Python

@CallbackHell thanks bro!

@Charon92 nice! Thanks bro! Appreciate this!

P1xt

Awesome!

You can pull up the reference, pick a library at random, and just mess around with it. It can be very liberating not having to worry about requirements when you're coding.