Using variables in signal handler - require global?

Question

I have a signal handler to handle ctrl-c interrupt. If in the signal handler I want to read a variable set in my main script, is there an alternative to using a \"global\" s

Answer 1

You can use partial to create a "closure".

import signal
from functools import partial

def signal_handler(g_var, signal, frame):
    print "in sig handler - g_var=%s" % g_var

def main():
    g_var = "test"
    signal.signal(signal.SIGINT, partial(signal_handler, g_var))

    time.sleep(120)


if __name__ == '__main__':
    main()