I've had one job in my life, still at the same company. (8 years).

I applied cause the listing mentioned Python, and I was programming in Python at the time.

Once I started they were like yeah we put that there to reach a broader public but we use Ruby (on Rails).

So that's what I learned. I've just returned to Python via LLM's. I literally have not felt the need nor desire to use Python once I got used to writing Ruby.