Is Throwing Your Own Exceptions a Good Idea?

Bence magar has linked to his pretty cool python library called bauce. And it's a visualization library, a for the browser, written in python. I've been doing a lot of python lately and do a lot of visualization, so i'll dimpanly have to take a look at this. It looks pretty cool. So i deftly want to check this outi personaly, i think to be pretty cool. A, i see a lot of value in this. But is tat like throwing your own isn't that big a deal. Since codes aready having to be set up to handle it. Verges like ince plus plus. That's not and