Python script - log failed icmp/ping response - problems -

i'm attempting write python script ping/icmp ip address , tell me if it's alive. i'm doing because have intermittent issue. wanted ping, log outcome, sleep period , attempt ping again. tried while loop, still getting errors these:

line 33, in (module) systemping('192.168.1.1') line 30, in systemping time.sleep(30) keyboardinterrupt 

i'm using python 2.6.

ideally question how loop through method/function systemping , errors there in code? script seems work, these errors when hit ctrl-c.

from subprocess import popen, pipe import datetime, time, re   logfile = open("textlog.txt", "a")  def getmytime():     = datetime.datetime.now()     return now.strftime("%y-%m-%d %h:%m \n")  starttime = "starting ..." + getmytime() logfile.write(starttime) logfile.write("\n")  def systemping(x):     cmd = popen("ping -n 1 " + x , stdout=pipe)     #print getmytime()     line in cmd.stdout:         if 'timed out' in line:             loggedtime = "failure detected - " + getmytime()             logfile.write(loggedtime)         if 'reply' in line:             print "replied..."     logfile.close()      print "sleeping 30mins ... ctrl c end"     time.sleep(30) #1800 30mins     systemping('192.168.1.1')  if __name__ =='__main__':     systemping('192.168.1.1') 

any appreciated. thank you.

it's not error per se, it's default behavior python, upon receipt of sigint (which happens when press ctrl-c), raise keyboardinterrupt exception.

you'll same thing if send signal kill(1), like...

$ kill -int <pid> 

if want handle it, can change code like...

if __name__ =='__main__':     try:         systemping('192.168.1.1')     except keyboardinterrupt:         print 'finished' 

...or whatever want do.