[Tutor] Search text file, perform action if a given item found in file

[Eric]

Here is the result of the first part of my script. I figure it may help 
out another newbie someday. Thanks for the help though.
I would not have made it this far without it.


import os
o=os.popen("netstat -an")
PORT = int(raw_input("What tcp/udp should I watch for?: "))
for l in o:
    try:
        if l.split()[1].endswith(str(PORT)):
            print "\a\a\a\aHere is a match!"
        else:
            print "Nothing"
    except IndexError:
        print "Index Excpetion"


raw_input("Press enter to close")




Kent Johnson wrote:

> Eric,
>
> It's a difference between netstat on Windows and FreeBSD. The windows 
> version includes a few header lines that don't split the way you 
> expect - the resulting list doesn't have two elements:
> >>> import os
> >>> f=os.popen('netstat -an')
> >>> for l in f:
> ...   print len(l.split())
> ...
> 0
> 2
> 0
> 6
> 4
> 4
> etc...
>
> You could check the length of the split before you do further 
> processing, or you could catch the exception and continue the loop.
>
> Kent