import time
import multiprocessing
start = time.perf_counter()
def do_something():
print("Sleeping 1 second...")
time.sleep(1)
print("Done Sleeping...")
p1 = multiprocessing.Process(target= do_something)
p2 = multiprocessing.Process(target= do_something)
p1.start()#these should run the procesess above but do nothing
p2.start()
finish = time.perf_counter()
print(f'Finished in {round(finish-start, 2)} second(s)')
这应该打印“ Sleeping 1 seconds ...”,然后显示“ Done Sleeping ...”,但是代码完全忽略了p1.start(),仅打印了显示运行代码所花费时间的最后几行>
最后我得到的是
Finished in 0.03 second(s)
答案 0 :(得分:0)
从字面上复制并粘贴您的代码,它可以按预期运行。打印“睡眠1秒”,然后打印“睡眠完成”。
Finished in 0.0 second(s)
Sleeping 1 second...
Sleeping 1 second...
Done Sleeping...
Done Sleeping...
我知道您遵循本教程:https://www.youtube.com/watch?v=fKl2JW_qrso
确实是一个好人,但您还需要听他的解释。他真的很擅长。
他还解释了如何转到此输出:
Sleeping 1 second...
Sleeping 1 second...
Done Sleeping...
Done Sleeping...
Finished in 1.01 second(s)
*请注意,“完成”位于最后一行