Execute function while script running

Question

Alright this is a simple question, because i don't really know what its called..

Say i have a loop in python

if pattern in buffer:
        while logme == "y":
            logging.basicConfig(filename='hook.log',level=logging.DEBUG)
            logging.debug("Pre-Encrypted: %s" % buffer)
            print "Pre-Encrypted: %s" % buffer
        else:
            print "Pre-Encrypted: %s" % buffer

How can i make it so when i press a keyboard key like P while the loop is running and have it execute a command like pausing the loop, exiting, or doing anything? Like not command line arguments but while the actual program is running..

I think you might need to use threading to keep your loop going while you get input in another thread, since both `input()` and `raw_input()` are blocking. — IT Ninja, Jan 18 '13 at 01:27

score 1 · Answer 1 · edited May 23 '17 at 10:24

1

Use Getch

See Python read a single character from the user

Or use curses

edited May 23 '17 at 10:24

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answered Jan 18 '13 at 01:29

Alex L

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score 1 · Answer 2 · answered Jan 18 '13 at 01:31

You could use curses, which would be a bit complicated.

A quick hack around it would be to intercept SIGINT (Ctrl-C, KeyboardInterrupt) in Python.

def foo():
  try:
     long_running_process()
  catch KeyboardInterrupt:
     deal_with_interrupt()

In addition to violating expectations about Ctrl-C behavior, this also doesn't provide an obvious way to restart the thing.

Execute function while script running

2 Answers2