Guido van Rossum wrote: > > [Tim] > > Are you sure Jim is looking to replace the TimeStamp object? All the > > complaints I've seen aren't about the relatively tiny TimeStamp object, but > > about Zope's relatively huge DateTime class (note that you won't have source > > for that if you're looking at a StandaloneZODB checkout -- DateTime is used > > at higher Zope levels), which is a Python class with a couple dozen(!) > > instance attributes. See, e.g., > > > > http://dev.zope.org/Wikis/DevSite/Proposals/ReplacingDateTime > > > > It seems clear from the source code that TimeStamp is exactly what Jim > > intended it to be <wink>. > > I'm notoriously bad at channeling Jim. Nevertheless, I do recall him > saying he wanted a lightweight time object. I think the mistake of > DateTime is that it stores the broken-out info, rather than computing > it on request. I don't think the mistake was so much to store broken-out info, but to store too much data in general. It stores redundant data, which makes it's implementation a bit difficult to understand and maintain. Note that scalability was not a goal of Zope's DateTime type. We meant to replace it with something much tighter a long time ago, but never got around to it. > > > Your idea of a base type (which presumably standarizes at least one > > > form of representation) sounds like a breakthrough that can help > > > satisfy different other needs. > > > > Best I can make out, /F is only proposing what Jim would call an Interface: > > the existence of two methods, timetuple() and utctimetuple(). In a comment > > on his page, /F calls it an "abstract" base class, which is more C++-ish > > terminology, and the sample implementation makes clear it's a "pure" > > abstract base class, so same thing as a Jim Interface in the end. Yup. > I'll show the PEP to Jim when it appears. Thanks. ;) BTW, has there been any progress on this? Jim -- Jim Fulton mailto:jim@zope.com Python Powered! CTO (888) 344-4332 http://www.python.org Zope Corporation http://www.zope.com http://www.zope.org
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