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Alex Rivera
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Well, at least a mystery to me. Consider the following: import time import signal def catcher(signum, _): print "beat!" signal.signal(signal.SIGALRM, catcher) signal.setitimer(signal.ITIMER_REAL, 2, 2) while True: time.sleep(5) It works as expected, i.e., delivers a "beat!" message every two seconds. Next, no output is produced: import time import signal def catcher(signum, _): print "beat!" signal.signal(signal.SIGVTALRM, catcher) signal.setitimer(signal.ITIMER_VIRTUAL, 2, 2) while True: time.sleep(5) Where is the issue?
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