It might make sense for someone switching technology stacks. Most of my experience is C/C++/PHP. Suppose I want to get a job using Python. I'm not senior, be

It might make sense for someone switching technology stacks. Most of my experience is C/C++/PHP. Suppose I want to get a job using Python. I'm not senior, because I don't have 5+ years Python experience. I'm not really entry level either. So how do I switch to using Python? What happen when demand for my current experience dries up? I'd have to apply for entry level jobs in other tech stacks. Am I really less employable than a recent grad? Is my experience really worthless? Was this a stupid career choice?