On Mon, Oct 19, 2009 at 07:51:06PM -0400, Matt Herzog wrote:
> 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.
Please ignore the above.
> ------------------------------ 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.
It's unreliable because it uses DNS, I believe. I'm not faulting the author.
>
> 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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>
> --
> The test of a first-rate intelligence is the ability to hold two opposed
> ideas in the mind at the same time, and still retain the ability to function.
>
> -- F. Scott Fitzgerald
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--
The test of a first-rate intelligence is the ability to hold two opposed ideas
in the mind at the same time, and still retain the ability to function.
-- F. Scott Fitzgerald
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