Catching Signal

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examples/signals/catch_signal.py

import signal
import os

def handler(signum, frame):
    print('Signal handler called with signal', signum)

signal.signal(signal.SIGUSR1, handler)

print("before")
os.kill(os.getpid(), signal.SIGUSR1)
print("after")

before
('Signal handler called with signal', 30)
after