Tests succeed, still get traceback

Question

I\'m using Python\'s unittest library and all the tests succeed, but I still get a traceback and I can\'t understand how I can fix the problem.

Answer 1

Whatever you're using to run these tests, it's catching the SystemExit exception and printing the traceback. When you write code that catches exceptions, you should take care to not catch exceptions that you don't actually want to catch, like SystemExit (raised by sys.exit() to end the program) and usually KeyboardInterrupt (raised by control-C.)