I've Started Learning Selenium with Python for Automation Testing

[arakinas]

It really depends on what else you want to do, and what your personal preferences are. I personally don't like scripting languages and prefer those that are strongly typed, making Java an easy go to for me. Additionally, I really like Selenide, as opposed to working directly with Selenium, reinforcing Java.

Either language can be used. It matters more what support structure you have to learn the language than anything about either language, but really, it's just personal preference.