Ask HN: Frontend vs Backend learning

I might be getting the two confused but recently I was offered an opportunity to take either Python or Javascript training program and I'm deciding on which is better for me at the moment to get into web development. I always hear Frontend is much harder than Backend?.

As far as I see it Python is Backend and Javascript deals with Frontend stuff related to HTML and CSS.

If given this opportunity to study the either Python or Javascript I'm curious what do the wonderful HN community choose and why based on your answer.

IMO I like both and wouldn't mind learning either one at the program but I have to choose one so help me decide thanks.