Python等待x秒获取密钥,如果未按下则继续执行

Question

我是python的n00b,我正在寻找执行以下操作的代码片段/示例:

• 显示"按任意键以配置或等待X秒继续"之类的消息
• 等待,例如,5秒钟继续执行,或者如果按下某个键,则输入configure()子程序.

谢谢您的帮助!

Yvan Janssens

Answer 1

如果你在Unix/Linux上,那么select模块将帮助你.

import sys
from select import select

print "Press any key to configure or wait 5 seconds..."
timeout = 5
rlist, wlist, xlist = select([sys.stdin], [], [], timeout)

if rlist:
    print "Config selected..."
else:
    print "Timed out..."

如果您使用的是Windows,请查看msvcrt模块.(注意这在IDLE中不起作用,但在cmd提示符下会有效)

import sys, time, msvcrt

timeout = 5
startTime = time.time()
inp = None

print "Press any key to configure or wait 5 seconds... "
while True:
    if msvcrt.kbhit():
        inp = msvcrt.getch()
        break
    elif time.time() - startTime > timeout:
        break

if inp:
    print "Config selected..."
else:
    print "Timed out..."

编辑更改了代码示例,以便您可以判断是否存在超时或按键...