[Python][много потоков] Прерывание с клавиатуры

from threading import Thread
from time import sleep

def run():
    while(True):
        print "I'am work"
        sleep(1)
            
thread = Thread(target=run)
thread.daemon = True
thread.start()

while(True):
    sleep(1)

if __name__ == '__main__':
    
    def interrupt_handler(signal, frme):
        print 'Работа программы прервана.'
        sys.exit()

    signal(SIGINT, interrupt_handler)

    main() # Здесь много потоков

from threading import Thread
from time import sleep

class MyThread(Thread):
    def __init__(self):
        Thread.__init__(self)
        self.interrupt = False

    def run(self):
        while(not self.interrupt):
            print "I'am work"
            sleep(1)
            
    def stop(self):
        self.interrupt = True
            
thread = MyThread()
thread.start()

while(True):
    try:
        sleep(1)
    except KeyboardInterrupt:
        break
        
thread.stop()

def run(self):
    while(not self.interrupt):
        print "I'am work"
        sleep(1)

Окружение
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--Окружение
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--Окружение
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