Finding the source of an exception in a python multiprocessing program

Neil Cerutti neilc at norwich.edu
Wed Apr 24 16:31:39 EDT 2013


On 2013-04-24, William Ray Wing <wrw at mac.com> wrote:
> When I look at the pool module, the error is occurring in
> get(self, timeout=None) on the line after the final else:
>
>     def get(self, timeout=None):
>         self.wait(timeout)
>         if not self._ready:
>             raise TimeoutError
>         if self._success:
>             return self._value
>         else:
>             raise self._value

The code that's failing is in self.wait. Somewhere in there you
must be masking an exception and storing it in self._value
instead of letting it propogate and crash your program. This is
hiding the actual context.

-- 
Neil Cerutti



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