python - 如何在 python 中通过键盘输入继续 for 循环？

Question

我有一个 for 循环，它使用 subprocess.call() 来调用 Linux 程序。有时需要太长时间，我希望能够跳到继续循环。有没有办法在 subprocess.call() 运行时监视键盘输入(例如 s)？

for x in y:
    if lookforkeyboardinput = s:
        continue
    subprocess.call(['program', x])

类似这样的事情。

Answer 1

使用键盘中断异常:

for x in y:
    try:
        subprocess.call(['program', x])
    except (KeyboardInterrupt, SystemExit):
        continue

示例:

from time import sleep

for x in range(0, 5):
    try:
        sleep(5)
        print x
    except (KeyboardInterrupt, SystemExit):
        continue

输出:

hedde-mpb:Desktop hedde$ python test.py 
1 
^C  // pressed right after 1 appears, slightly over 5 seconds later 3 appears
3