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I'm wondering about the best way to get a stacktrace when there is an exception inside a function executed via the multiprocessing module. Here's an example: import multiprocessing def square(x): raise Exception("Crash.") return x**2 if __name__ == '__main__': pool = multiprocessing.Pool(processes=4) results = pool.map_async(square, range(5)) for result in results.get(): print result This prints: Traceback (most recent call last): File "/extra/workspace/Playground/src/multiproc/multiproc_debug.py", line 11, in <module> for result in results.get(): File "/extra/Python 2.6/lib/python2.6/multiprocessing/pool.py", line 422, in get raise self._value Exception: Crash. So there is no useful stacktrace, which is quite annoying. My current solution for this: import multiprocessing import traceback def square(x): try: # some more code... raise Exception("Crash.") except Exception, exception: print exception traceback.print_exc() raise return x**2 Is there a way to get this behaviour without all the boilerplate code? If not, what is the reason for not including this feature? Edit: One could use a decorator for the boilerplate code, but I don't know if such a decorator is included in the standard library?

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