Signal Handling

An app handles signals by listening for a SIGNAL event.

@app.event('signal', signal='SIGHUP')
def sighup(event):
    event.exit = False
    ...

The framework automatically listens for SIGTERM, SIGINT, and SIGHUP signals. By default, these signals cause the program to shutdown cleanly. To prevent the signal from quitting the program, your handler can change event.exit to False.

You can also listen for other signals. By default, these signals do not quit the program unless you set event.exit to True. To listen for a signal, specify the signal name using the signal attribute.

@app.event('signal', signal='SIGUSR1')
def siguser1(event):
    ...