I’ve used both debuggers and print/log statements. More recently, I’ve learned the value of even seeing if I’m in the right part of the code by inserting 1 / 0

I’ve used both debuggers and print/log statements. More recently, I’ve learned the value of even seeing if I’m in the right part of the code by inserting 1 / 0 (or any way to raise an exception if 1 / 0 doesn’t blow things up). If I can’t even get a bad arithmetic error, I don’t need to worry about the rest of it!