[Tutor] keyboard interrupt

[Jerry Hill]

On Wed, May 22, 2013 at 3:47 PM, Jim Mooney <cybervigilante at gmail.com>wrote:

> I made a simple ear frequency-tester, but I don't want it to go on
> forever, so I tried stopping it when I  pressed a key, as below, but
> that doesn't work. I did check out keyboard interrupts but they seem
> unnecessarily complex just to stop a program. I'm not passing keys. Is
> there something simple I'm missing?
>
> import winsound
>
> try:
>     for freq in range(100,32000,100):
>         winsound.Beep(freq, 1000)
> except KeyboardInterrupt:
>     pass
>
>
The KeyboardInterrupt ​exception is raised when someone presses Ctrl-C.  If
you catch it, and ignore it (which is what your code above is doing), then
pressing Ctrl-C doesn't do anything.  If you just take out the try/except,
then you can hit Ctrl-C and interrupt your program as normal.

-- 
Jerry
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