from random import randint |
from time import time, sleep |
def download_task(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() |
download_task( 'Python从入门到住院.pdf' ) |
download_task( 'Peking Hot.avi' ) |
end = time() |
print ( '总共耗费了%.2f秒.' % (end - start)) |
if __name__ = = '__main__' : |
main() |