[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Daniel Albeseder ko...@gmx.at added the comment: Steven: From msg121850 I think the last two examples do not need the --. Since there are no positional arguments, the -- is not needed. However the following additional cases exist: -x X [X ...] -y Y -- A B # since optionals might come in other order Basically every of the three variable length classes need to be tested: ZeroOrOne, ZeroOrMore and OneOrMore. This might always come in a conflict with positional arguments needed afterward (even with optional positional arguments!). BTW - I recognized the following seem to be supported: for [-x [X ...]] -- [y ...] the following input: a -x -- b I would expect to be 'a' and 'b' positional arguments and the optional '-x' has no argument. However this seem not to work. Another issue or desired behavior? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Daniel Albeseder ko...@gmx.at added the comment: Added more unit tests for testing the help text as well as the functionality of the -- separator. -- keywords: +patch Added file: http://bugs.python.org/file19731/issue9182.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Changes by Daniel Albeseder ko...@gmx.at: Removed file: http://bugs.python.org/file19731/issue9182.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Changes by Daniel Albeseder ko...@gmx.at: Added file: http://bugs.python.org/file19732/issue9182.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Steven Bethard steven.beth...@gmail.com added the comment: Yeah, sorry, those last two should have had arguments after them. I think we have to stick with the current behavior - otherwise there's no way to do something like -x -A -B, where you want -A and -B to be arguments to -x. (You can get that now with -x -- -A -B.) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Daniel Albeseder ko...@gmx.at added the comment: Steven: The last part I guess would belong better in issue 9334. Using a -- to end all optionals is just a convention but -- could also be the argument to some option as well. We need to limit this in any way, and the way it is done right now seem very reasonable for me. Adding some additional unit tests testing this limits might be beneficial but I guess would be best done during issue 9334. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Daniel Albeseder ko...@gmx.at added the comment: I did the patch for adding the -- in the generated usage text inside issue 9338. -- nosy: +Kotan ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Steven Bethard steven.beth...@gmail.com added the comment: Sorry, I think I confused you, please post that patch here. This issue is for documenting the workarounds, issue 9338 is for actually solving the problem. I glanced at your patch on that issue, and it looks basically okay, though I'd like to see a few more tests for the help messages to cover things like: -x X A # no -- -x [X [X ...]] -y Y [Y ...] # no -- -x [X] -- A B# needs -- -x X [X ...] # needs -- -x [X [X ...]] # needs -- It's possible the first two are already covered by the other tests, but at least the last three should all be tested for. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Éric Araujo mer...@netwok.org added the comment: Sergey: Do you want to make a patch for that, and/or for the documentation? Guidelines are on http://www.python.org/dev/patches/ -- nosy: +bethard resolution: accepted - versions: +Python 3.1, Python 3.2 -Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Steven Bethard steven.beth...@gmail.com added the comment: The original point is basically a duplicate of issue 9338. It is undesirable behavior, I just don't know how to fix it. Patches to fix it are welcome (on issue 9338). ;-) As to documenting '--', I agree it's hidden too far down in the documentation currently. I'd be happy to approve any documentation patch that makes the '--' workaround more visible. -- versions: -Python 3.1 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Éric Araujo mer...@netwok.org added the comment: You’re right, sorry I was unclear: “a patch for that” referred to the addition of “--” in the generated usage text. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Éric Araujo mer...@netwok.org added the comment: I always forget that not all programs follow getopt-style parsing rules, thanks for the reminder. -- keywords: +easy resolution: - accepted title: argparse: optional argument w/ narg='+' conflicts w/ positional argsument - document “--” as a way to distinguish option w/ narg='+' from positional argument in argparse ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9182] document “--” as a way to disti nguish option w/ narg='+' from positional argument in arg parse
Sergey Konoplev gray...@gmail.com added the comment: Thank you for the hint. It is realy not so obvious. May be it is worth to add -- into the usage string this way usage: [-h] [-b BAR [BAR ...]] -- foo Otherwise it leads to misunderstanding. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
