Send the output from a running script

[MeeranRizvi]

Hello Guyz,
Here i am writing a script by pinging an ip continously.

def ip_ping():
    import subprocess
    b= "172.30.36.136"
    a = subprocess.Popen(["ping","-t", b], stdout=subprocess.PIPE).stdout.read()
    if a.count("Destination host unreachable.")>5:
        print a
ip_ping()    

when the condition satisfies, it doesn't print the output to the idle shell while the script is running.
when i close the running script it gets printed in the Idle shell.
How to print the output while the script is running?

Thanks in Advance.