def test4():
print ("\ntest 4: imap_unordered with 2 arguments")
pool = Pool()
it = pool.imap_unordered(g, list(range(10)), list(range(20, 30)))
print ("->", sum(it))
def test2():
print ("\ntest 2: imap_unordered")
pool = Pool()
it = pool.imap_unordered(f, list(range(10)))
print ("->", sum(it))
