How to avoid python exception in while handling SIGINT

Question

import signal
import time

def sigint_handler(signum, frame):
    print 'User pressed CTRL+C!'

signal.signal(signal.SIGINT, sigint_handler)

def main():
    while True:
       print 'Script to handle SIGINT'
       time.sleep(2)

##########

if __name__ == "__main__":
    main()

How can I block this below exception thrown by python itself when executing the code:

File "D:\Documents\scripts\ctrlc handler.py", line 19, in <module> main() 
File "D:\Documents\scripts\ctrlc handler.py", line 14, in main 
time.sleep(2) OError: [Errno 4] Interrupted function call

Answer 1

The issue seems to have something to do with different signals being received and different errors being thrown. See also this maybe for reference. The work around I could come up with was to catch and ignore the OSError/IOError that is being thrown like so:

import signal
import time

def sigint_handler(signum, frame):
    print 'User pressed CTRL+C!'

signal.signal(signal.SIGINT, sigint_handler)

def main():
    while True:
       print 'Script to handle SIGINT'
       try:
           time.sleep(2)
       except IOError:
           pass

##########

if __name__ == "__main__":
    main()

Which works perfectly.

Script to handle SIGINT
User pressed CTRL+C!
Script to handle SIGINT
User pressed CTRL+C!
Script to handle SIGINT
User pressed CTRL+C!
Script to handle SIGINT
User pressed CTRL+C!
Script to handle SIGINT
User pressed CTRL+C!
Script to handle SIGINT
User pressed CTRL+C!
Script to handle SIGINT
User pressed CTRL+C!
Script to handle SIGINT
User pressed CTRL+C!