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 access outer-scope variables from within an inline-defined function, like so:

my_values = {'foo':'bar'}
def handler(signum, frame):
    for key,val in my_values.items():
        print key,val
    my_values['bat']='baz'
    #remember to use mutable types, like dicts or lists

signal.signal(signal.SIGINT, handler)