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我提交了以下內容,對我來說運行正常,但我只有一臺核心計算機,並且我認爲documentations評論說它將散佈在更多內核上(如果我擁有它們);自動。這是使用新的concurrent.futures lib的並行計算行嗎?
from concurrent import futures
import math
NUMBERS = [
112272537195293,
112582718962171,
112272537095293,
115280098190773,
115797840077099,
1099726829285419]
def lowest_factor(n):
if n % 2 == 0:
return 2
sqrt_n = int(math.floor(math.sqrt(n)))
for i in range(3, sqrt_n + 1, 2):
if n % i == 0:
return i
return n
def main():
print('For these numbers:\n ' + '\n '.join(str(p) for p in NUMBERS))
with futures.ProcessPoolExecutor() as executor:
low_factor, number = min((l, f) for l, f in zip(executor.map(lowest_factor, NUMBERS), NUMBERS))
print(' The mnimal prime factor is %d of %i' % (low_factor, number))
if __name__ == '__main__':
main()
它看起來OK我在Python 3.2b1運行(r32b1:87064,2010年12月5日,19時08分18秒),但我更樂意別人的批評。 P.S.我做了以上這個:http://rosettacode.org/wiki/Parallel_calculations