Finding the source of an exception in a python multiprocessing program
Neil Cerutti
neilc at norwich.edu
Thu Apr 25 08:37:03 EDT 2013
On 2013-04-24, William Ray Wing <wrw at mac.com> wrote:
> On Apr 24, 2013, at 4:31 PM, Neil Cerutti <neilc at norwich.edu> wrote:
>
>> 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.
>
> I'm sorry, I'm not following you. The "get" routine (and thus
> self.wait) is part of the "pool" module in the Python
> multiprocessing library. None of my code has a class or
> function named "get".
Oops! I failed to notice it was part of the pool module and not
your own code.
--
Neil Cerutti
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