help index error

[dragrid]

when I run program below I am getting an index error on line 18
chk2 = .......
indexerror : list index out of range
Any help appreciated
Thx

import os
import string
import sys
import linecache

ping_results = []
ip_array = ('192.168.1.43', '192.168.1.1', '127.0.0.1')
for ip in ip_array:
    f = os.popen('ping %s' % (ip)).read()
    out_ping = [item.strip() for item in f.splitlines(True)
		if item.strip()]
#f.close()

ping_results.append(out_ping)

for result in ping_results:
	chk1 = result[4]
	chk2 = int(''.join([s for s in result[8].split() [-1]
	if s.isdigit()]))
	if chk1.startswith("Reply") and chk2 < 80:
            print chk1
            print result[8]

[bvdet]

Please use code tags. See "How to ask a question" in Posting Guidelines. When a ping request makes no connection, the data returned looks like this:

>>> result
['Pinging 192.168.1.43 with 32 bytes of data:', 'Request timed out.', 'Request timed out.', 'Request timed out.', 'Request timed out.', 'Ping statistics for 192.168.1.43:', 'Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),']
>>>

Since there are only 7 items in the list, attempting to access the item at list index 8 will produce an IndexError.

[dragrid]

Bvdet ... Thanks for answering my question - will try to follow posting guideline better ... appreciate the link