Finding the source of an exception in a python multiprocessing program

[Neil Cerutti]

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