Feature Requests item #1075902, was opened at 2004-11-30 05:28 Message generated for change (Comment added) made by rhettinger You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=355470&aid=1075902&group_id=5470
Category: None Group: None >Status: Closed >Resolution: Rejected Priority: 5 Submitted By: Sean Proctor (sproctor) Assigned to: Nobody/Anonymous (nobody) Summary: ignore element format character for PyArg_ParseTuple Initial Comment: Some kind of option to indicate there is an element, but we don't care about its value would be nice. It could be _. then an example would be: PyArg_ParseTuple (tuple, "_i", &my_int); This indicates that there is another value before the int, but we don't care about it one way or the other. ---------------------------------------------------------------------- >Comment By: Raymond Hettinger (rhettinger) Date: 2004-12-14 21:49 Message: Logged In: YES user_id=80475 Am closing this RFE. It has a -1 from three developers. The benefits, if any, are minor and do not warrant the time to implement, test, document, etc. ---------------------------------------------------------------------- Comment By: Martin v. Löwis (loewis) Date: 2004-12-09 18:21 Message: Logged In: YES user_id=21627 So just call the variable _: PyObject *_; PyArg_ParseTuple(tuple, "Oi", &_, &my_int); Given that this is possible today already, I expect that this RFE will be considered so minor that it won't be implemented anytime soon. It increases the learning curve for a nearly-unnoticable convenience. ---------------------------------------------------------------------- Comment By: Sean Proctor (sproctor) Date: 2004-12-09 00:37 Message: Logged In: YES user_id=43755 that would turn my example into PyArg_ParseTuple (tuple, "Oi", _, &my_int); I don't particularly care. I thought it was a good suggestion. To me _ looks like a blank. I wouldn't really want to use it in a format string for something besides an any/none scenario. Your reasoning about preserving format characters seems really weak. You've never had a tuple where you didn't care about the value of each element? Somewhat separate topic. Could you say "PyArg_ParseTuple (tuple, "Oi", NULL, &my_int);" ? I guess that would be a less elegant way of doing what I intended. ---------------------------------------------------------------------- Comment By: Tim Peters (tim_one) Date: 2004-12-09 00:04 Message: Logged In: YES user_id=31435 If you want to make C code look like ML, declare PyObject** _; and use _ in the argument list. I'm -1 on this: the case has almost never arisen in my experience, and the limited pool of format characters should be preserved for high-value uses. ---------------------------------------------------------------------- Comment By: Sean Proctor (sproctor) Date: 2004-12-08 22:35 Message: Logged In: YES user_id=43755 If I use O, then I need to have a variable to store it in. I think it's less readable. Like with pattern matching in ML, you can use a variable instead of _, but it's not obvious that you aren't going to use that value. With some kind of place holder, this is made clear, and I don't need to create a variable to store a value that I don't care about. ---------------------------------------------------------------------- Comment By: Martin v. Löwis (loewis) Date: 2004-12-08 16:42 Message: Logged In: YES user_id=21627 What's wrong with using O as the format character? ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=355470&aid=1075902&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
