An example of having a function being called regularly while still processing user input

periodicEvent.py

'''
An example of having a function being called regularly
while still processing user input
'''

import threading

# the regular event
timer = None
def regularEvent():
    print ' ====== regular event ====== '
    global timer
    timer = threading.Timer(5, regularEvent)
    timer.start()
regularEvent()




# our input loop
try:
    while True:
        print
        line = raw_input('what do you want capitalized? (Ctrl+C to exit) \n')
        print line.upper()
except KeyboardInterrupt:  # Ctrl+C
    pass


# cleanup
# stop the regular event
timer.cancel()