On Mon, Oct 19, 2009 at 08:07:47PM +0100, Alan Gauld wrote:
>
> "Matt Herzog" <m...@blisses.org> wrote
>
> >remembered that strings are immutable.
> >So how was I able to change the strings for my dotted quad?
>
> You didn't.
>
> >LASTKNOWN = '173.48.204.168'
> > lns = cf.readlines()
> > lns = "".join(lns)
> > lns = re.sub(LASTKNOWN, CURRENT, lns)
>
> I assume this is the line in question?
> sub() returns a new string containing the substitutions.
>
> HTH,
Yes! It sure does help. I just discovered that my script does not exit if the
CURRENT IP is the same as the LASTKNOWN IP.
------------------------------ snip --------------------------------------
CURRENT = socket.getaddrinfo(socket.gethostname(), None)[0][4][0]
------------------------------ snip --------------------------------------
Turns out the above is an unreliable way to get the IP of the interface since
the machine the above is running on does not have a proper hostname and is a
dhcp client on a broadband network.
Anyway, I'd like a hint as to how I could convert this:
ifcfg_lines = os.popen("/sbin/ifconfig fxp0").readlines()
x = string.split(ifcfg_lines[3])[1]
to the subprocess module. The os module is going away, right?
>
>
> --
> Alan Gauld
> Author of the Learn to Program web site
> http://www.alan-g.me.uk/
>
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-- F. Scott Fitzgerald
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