在Python中，为什么控制台输出有时会暂停，直到按ctrl-c为止，我该如何停止呢？

Question

This issue seems to crop up once every week or so while doing Python development. Whether in Bash on Linux or cmd.exe or Powershell, Python scripts will sometimes pause their output, leading one to believe they may have locked up. Upon having ctrl-c pressed, the console output will resume, and it will be apparent that the script has been executing in the background. As if scroll lock had been pressed or something.

The program doesn't matter and it can only be reproduced over time. You could run the following snip:

import time

i = 0
while True:
    print i
    i++
    time.sleep(1)

And in the next week or so, the console will pause, even though i is still increasing every second in the background.

This isn't just poor design on my end - I had this happen to a Celery process more than once & a Django test server, along with my own programs. Normally I would just consider it a 'nuisance' but ctrl-c can also accidentally terminate the program if it's actually, really busy.

This behavior has also existed for my co-workers, but nobody seems to know what to do about it.

Does anyone have a solution for this?

Thanks!

Answer 1

可能是您按下了窗口外或按下了ctrl-S（这会暂停consle输出）