On Fri, 2010-03-05 at 07:53 -0800, Pete Emerson wrote:
> Thanks for your response, further questions inline.
>
> On Mar 4, 11:07 am, Tim Wintle <tim.win...@teamrubber.com> wrote:
> > On Thu, 2010-03-04 at 10:39 -0800, Pete Emerson wrote:
> > > I am looking for advice along the lines of "an easier way to do this"
> > > or "a more python way" (I'm sure that's asking for trouble!) or
> > > "people commonly do this instead" or "here's a slick trick" or "oh,
> > > interesting, here's my version to do the same thing".
> >
> > (1) I would wrap it all in a function
> >
> > def main():
> > # your code here
> >
> > if __name__ == "__main__":
> > main()
>
> Is this purely aesthetic reasons, or will I appreciate this when I
> write my own modules, or something else?
It's for when you reuse this code.
Consider it's in "mymodule.py" (so run with ./mymodule.py) - if you then
make a "tests.py" (for example) you can "import mymodule" without it
automatically running your code.
re-writing it
def main(args):
#your code
if __name__ == "__main__":
main(sys.argv[1:])
would obviously be more sensible for actually writing tests.
> > ... or you could replace whole section between the for loop and
> > hosts.append with:
> >
> > if sorted(hostname.split(".")) == sorted(sys.argv[1:]):
> > host.append(hostname)
>
> This doesn't actually work, because I'm not looking for a one to one
> mapping of args to sections of hostname, but rather a subset. So
> passing in 'prod sfo' would register a match for '001.webapp.prod.sfo'.
Ah - good point - I guess the the set intersection technique someone
else mentioned is best in that case.
Tim
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