Il Thu, 10 Dec 2009 23:10:02 +0000, Matthew Barnett ha scritto:
> mattia wrote:
>> Il Thu, 10 Dec 2009 04:56:33 +0000, Brad Harms ha scritto:
>>
>>> On Thu, 10 Dec 2009 00:29:45 +0000, mattia wrote:
>>>
>>>> Il Wed, 09 Dec 2009 16:19:24 -0800, Jon Clements ha scritto:
>>>>
>>>>> On Dec 9, 11:53 pm, mattia <ger...@gmail.com> wrote:
>>>>>> Hi all, can you provide me a simple code snippet to interrupt the
>>>>>> execution of my program catching the KeyboardInterrupt signal?
>>>>>>
>>>>>> Thanks,
>>>>>> Mattia
>>>>> Errr, normally you can just catch the KeyboardInterrupt exception --
>>>>> is that what you mean?
>>>>>
>>>>> Jon.
>>>> Ouch, so the simplest solution is just insert in the 'main' function
>>>> a try/catch? I believed there was the necessity to create a signal
>>>> and than attach the KeyboardInterrupt to it...
>>>
>>> KeyboardInterrupt is just an exception that gets raised when CTLR+C
>>> (or the OS's equivalent keyboard combo) gets pressed. It can occur at
>>> any point in a script since you never know when the user will press
>>> it, which is why you put the try: except KeyboardInterrupt: around as
>>> much of your script as possible. The signal that the OS sends to the
>>> Python interpreter is irrelevant.
>>
>> Ok, so can you tell me why this simple script doesn't work (i.e. I'm
>> not able to catch the keyboard interrupt)?
>>
>> import time
>> import sys
>> from threading import Thread
>>
>> def do_work():
>> for _ in range(1000):
>> try:
>> time.sleep(1)
>> print(".", end="")
>> sys.stdout.flush()
>> except KeyboardInterrupt:
>> sys.exit()
>>
>> def go():
>> threads = [Thread(target=do_work, args=()) for _ in range(2)] for t
>> in threads:
>> t.start()
>> for t in threads:
>> t.join()
>>
>> go()
>
> Only the main thread can receive the keyboard interrupt.
Ok, so is there any way to stop all the threads if the keyboard interrupt
is received?
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