python-multiprocessing

import multiprocessing

pool = multiprocess.Pool( n ) # multi process

pool.map( func, input )

pool.close()  # there is no new process into pool after close

pool.join()  #wait all process done

from nmultiprocessing.dummy import Pool

pool = Pool( n )   # multi thread

pool.map( func, input )

pool.close()

pool.join()

note :  

def  __name__ == '__main__':   # should added

------reference-----------------

1. http://chriskiehl.com/article/parallelism-in-one-line/

2. https://dotblogs.com.tw/rickyteng/archive/2012/02/20/69635.aspx