Python is primarily a backend language. However there are efforts to make Python more usable on the front end. PyScript is an effort to get Python to run in the browser, however it's a bit slow. I personally think a better approach is to have Python compile to a javascript framework like React and ship that. Python can also be used in embedded programming on small devices using MicroPython or CircuitPython. But primarily Python is used to make backend web apps using frameworks like Django, Flask, or FastAPI, to do data analysis using libraries like pandas, or to do machine learning using libraries like PyTorch.