Not too long ago I prototyped a frames implementation including making _getframe work - but it doesn't include locals in the frames. I guess in this case it would work just fine.
The downside is it results in a 50% perf degrade on Pybench when calling recursive functions. But we're already really fast calling functions so maybe that's acceptable. Anyway it's something we can consider for a post-2.0 release (maybe w/ a command line option to control its presence) but I came up with the prototype too late to go adding it to 2.0. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Michael Foord Sent: Friday, September 19, 2008 5:27 AM To: Discussion of IronPython Subject: [IronPython] Named Tuple and IronPython 2 Hello all, At PyCon UK Raymond Hettinger showed off the Named Tuple; a very useful recipe for creating tuples with named fields. It is becoming part of the standard library in Python 2.6. http://code.activestate.com/recipes/500261/ >>> from namedtuple import namedtuple >>> thing = namedtuple('thing', ('whizz', 'pop')) >>> thing <class >>> '__builtin__.thing'> >>> i = thing(1, 2) >>> i.whizz 1 >>> i.pop 2 >>> w, p = i >>> w, p (1, 2) >>> i thing(whizz=1, pop=2) >>> I've attached a modified version that works with IronPython 2 B5 (it doesn't work with 2B4 due to a very odd bug that is now fixed). The only change needed was to comment out the use of 'sys._getframe' which is there for pickle support. It is only conditionally used, because Jython didn't support this either - but on Jython _getframe wasn't defined at all so the conditional check fails on IronPython: # Bypass this step in enviroments where # sys._getframe is not defined (Jython for example). if hasattr(_sys, '_getframe'): result.__module__ = _sys._getframe(1).f_globals['__name__'] I'll suggest a modification to the recipe that works with IronPython. A better solution would be to implement '_getframe' of course... :-) Michael Foord -- http://www.ironpythoninaction.com/ http://www.voidspace.org.uk/ http://www.trypython.org/ http://www.ironpython.info/ http://www.resolverhacks.net/ http://www.theotherdelia.co.uk/ _______________________________________________ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
