subprocess.call("ping -c 1 %s" % ip,shell = True,stdout = open('/dev/null','w'),stderr = subprocess.STDOUT)subprocess.call("ping -c 1 %s" % ip,shell =subprocess.call("ping -c 1 %s" % ip,shell = True,stdout = open('/dev/null','w'),stderr = subprocess.STDOUT)subprocess.call("ping -c 1 %s" % ip,shell =