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859天前from random import randint |
from threading import Thread |
from time import time, sleep |
def download(filename): |
print('开始下载%s...' % filename) |
time_to_download = randint(5, 10) |
sleep(time_to_download) |
print('%s下载完成! 耗费了%d秒' % (filename, time_to_download)) |
def main(): |
start = time() |
t1 = Thread(target=download, args=('Python从入门到住院.pdf',)) |
t1.start() |
t2 = Thread(target=download, args=('Peking Hot.avi',)) |
t2.start() |
t1.join() |
t2.join() |
end = time() |
print('总共耗费了%.3f秒' % (end - start)) |
if __name__ == '__main__': |
main() |
