Just from my experience it would be very helpful to be familiar to relevant languages.
Case in point: My daughter is struggling somewhat (if staying up until 4:30 AM, a couple of nights ago means that!) right now with a math class in UCLA with assignments in python which she is not familiar with. And believe me she is as competitive as it gets (if being a Regent scholar means anything).
So I think it would be helpful to become familiar to these languages prior to getting to collage. However, you do not have to enroll in a computer class to learn them (believe me, as I am a professional programmer).