It's pronounced Diane. I do data architecture, operations, and backend development. In my spare time I maintain Massive.js, a data mapper for Node.js and PostgreSQL.
You're going to learn JavaScript one way or another in web development, which is a decent argument for reorienting towards that. But your existing familiarity with Python can get you started faster if your next project needs to run code on the server (if it does not and you're decently comfortable with the fundamentals of flow control and so on, it might be a good time to learn JavaScript). Either way you'll still need to choose between web frameworks at least, and possibly databases, templating languages, and other such concerns; but right now focus on that first decision, since that's what's going to determine your options.
Assuming you're career-minded, it also probably wouldn't hurt to look at job boards to see what there's a market for in your area.
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You're going to learn JavaScript one way or another in web development, which is a decent argument for reorienting towards that. But your existing familiarity with Python can get you started faster if your next project needs to run code on the server (if it does not and you're decently comfortable with the fundamentals of flow control and so on, it might be a good time to learn JavaScript). Either way you'll still need to choose between web frameworks at least, and possibly databases, templating languages, and other such concerns; but right now focus on that first decision, since that's what's going to determine your options.
Assuming you're career-minded, it also probably wouldn't hurt to look at job boards to see what there's a market for in your area.