On Tue, 25 Mar 2008 05:42:03 -0700, hellt wrote:
[snip]
> usage = "usage: %prog [options]"
> parser = OptionParser(usage)
> parser.add_option("-f", "--file", dest="filename",
> help="executable filename",
> metavar="FILE")
> parser.add_option("-b", "--bighosts",
> action="store_true", dest="bighosts", default=False,
> help="with big hosts [default: %default]")
> (options, args) = parser.parse_args()
> if not options.bighosts:
> print parser.print_usage()
FWIW you should perhaps give a special error message rather than the
generic help (something like "you need to specify bighosts, see --help
for details").
If possible, you should use `args` rather than an option (they are, well,
optional). But if your program takes a lot of mandatory arguments, using
options in order to mix them at will might be fine.
HTH,
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