What signal was I sent?

sig.py

#!/usr/bin/env python
import time
import signal
import sys

SIGS = dict((k, v) for v, k in signal.__dict__.iteritems() if v.startswith('SIG'))

def sighandler(signum, frame):
    print 'Signal handler called with signal', SIGS[signum]
    sys.exit(1)

for i in [x for x in dir(signal) if x.startswith("SIG")]:
    try:
        signum = getattr(signal,i)
        signal.signal(signum,sighandler)
    except (RuntimeError, ValueError), e:
        print "Skipping %s" % i

if __name__ == '__main__':
    while True:
        time.sleep(0.5)