# -*- coding: utf-8 -*-

import time
from multiprocessing import Pool

def len2(x):
    time.sleep(10)
    return len(x)

if __name__ == '__main__':
    p = Pool(processes=1)
    try:
        # You have 10 secs to type ^C to hang the interpreter
        assert sum(p.map(len2, ['ab', 'c'])) == 3
        p.close()
    except:
        p.terminate()
        raise
    finally:
        p.join()