Of those three? Python. Why? Lots of stuff built in or well-known.
But it's almost entirely irrelevant: reasonable companies will either (a) expect you to code in the language they're hiring for or something at least used within the company, or (b) not care (within reasonable bounds, e.g., don't do your interview in Piet).
But it's almost entirely irrelevant: reasonable companies will either (a) expect you to code in the language they're hiring for or something at least used within the company, or (b) not care (within reasonable bounds, e.g., don't do your interview in Piet).