Why i got the exception when using multiprocessing.Pool?

Why i got the exception when using multiprocessing.Pool?

References

Reference NO 1

http://stackoverflow.com/questions/13656979/why-i-got-the-exception-when-using-multiprocessing-pool

Reference NO 2

http://stackoverflow.com/questions/6728236/exception-thrown-in-multiprocessing-pool-not-detected

Reference NO 3

http://docs.python.org/library/multiprocessing.html

Reference NO 4

http://jessenoller.com/blog/2009/01/08/multiprocessingpool-and-keyboardinterrupt

Reference NO 5

http://www.bryceboe.com/2010/08/26/python-multiprocessing-and-keyboardinterrupt/

Reference NO 6

http://python.6.x6.nabble.com/issue9400-multiprocessing-pool-AsyncResult-get-messes-up-exceptions-td714472.html

Reference NO 7

http://www.gossamer-threads.com/lists/python/python/1055952

Reference NO 8

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