On 7 Jul, 2013, at 13:35, Larry Hastings <la...@hastings.org> wrote: > > On 07/07/2013 07:25 AM, Ronald Oussoren wrote: >> Signature objects use a name in angled brackets to indicate that a parameter >> is positional only, for example "input(<prompt>)". That might be an >> alternative to adding a "/" in the argument list in pydoc's output. >> > > I wasn't aware that Signature objects currently had any support whatsoever > for positional-only parameters. Yes, in theory they do, but in practice they > have never seen one, because positional-only parameters only occur in > builtins and Signature objects have no metadata for builtins. (The very > problem Argument Clinic eventually hopes to solve!) > > Can you cite an example of this, so I may examine it?
I have a branch of PyObjC that uses this: <https://bitbucket.org/ronaldoussoren/pyobjc-3.0-unstable/overview>. That branch isn't quite stable yet, but does add a __signature__ slot to objc.selector and objc.function (basicly methods of Cocoa classes and automaticly wrapped global functions), both of which only have positional-only arguments. With the patch for pydoc/inspect I mentioned earlier I can then generate somewhat useful documentation for Cocoa classes using pydoc. A word of warning though: the PyObjC source code isn't the most approachable, the code that generates the Signature object is actually in python (callable_signature in pyobjc-core/Lib/objc/_callable_docstr.py) Ronald > > > /arry _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
