[Python-Dev] Proposed standard module: Optik
Mon, 11 Feb 2002 11:10:25 -0500
On 11 February 2002, Guido van Rossum said:
> No immediate objection, although there are some other fancy options
> packages around, and IMO you have to explain why Optik is better.
Well, here's what I like about Optik:
* it ties short options and long options together, so once you
define your options you never have to worry about the fact that
-f and --file are the same
* it's strongly typed: if you say option --foo expects an int,
then Optik makes sure the user supplied a string that can be
int()'ified, and supplies that int to you
* it automatically generates full help based on snippets of
help text you supply with each option
* it has a wide range of "actions" -- ie. what to do with the
value supplied with each option. Eg. you can store that value
in a variable, append it to a list, pass it to an arbitrary
callback function, etc.
* you can add new types and actions by subclassing -- how to
do this is documented and tested
* it's dead easy to implement simple, straightforward, GNU/POSIX-
style command-line options, but using callbacks you can be as
insanely flexible as you like
* provides lots of mechanism and only a tiny bit of policy (namely,
the --help and (optionally) --version options -- and you can
trash that convention if you're determined to be anti-social)
Anyways, read the docs at optik.sourceforge.net for the whole deal.
> Can we change the name? Optik is nice for a standalone 3rd party
> module/package but a bit too fancyful for a standard library module.
Sure, no problem.
> It could be a new function in getopt:
> from getopt import OptionParser
> parser = OptionParser()
I guess that's OK if we're agreed that Optik is the be-all, end-all
option-parsing tool. (I happen to think so, but I'd like to get
opinions from a few other python-dev'ers before I let this go to my
head.) I'm pretty cool to names like "super_getopt" or "fancy_getopt",
despite having perpetrated precisely the latter in the Distutils. ;-(
Greg Ward - geek-at-large email@example.com
Know thyself. If you need help, call the CIA.