[Python-Dev] PEP 289 - Generator Expressions (original) (raw)
[Python-Dev] PEP 289 - Generator Expressions - Let's Move Forward
Michael Chermside mcherm at mcherm.com
Fri Apr 23 15:02:49 EDT 2004
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I'd like to get generator expressions checked into CVS.
Regarding the early-or-late binding issue, here's what I'd like to see happen: I'd like the late-binding (i.e. non-capture) version checked in and released with Python 2.4a1 and a2. If we find there are real problems with these semantics, we can switch to early-binding semantics in 2.4b1
Sounds like a good plan, but I have one question: Given the extent to which alpha releases are tested (and subtracting out those who use them only to check old code for compatibility and don't try out the new features) are we going to be able to tell if there are problems with the semantics?
My best idea is that those who currently favor the early-binding approach (and I'm sure you've heard from plenty of them) should be encouraged to try it out in the alpha and report any issues, along with actual use cases. Someone collects these responses, then you (Guido) look over the results (with a grain of salt since it's mostly being tested by folks who object) and decide if it's a problem.
Will that work? Anyone have a better idea? How do we go about asking people to try it out (is a mention by Guido on comp.lang.python sufficient)?
-- Michael Chermside
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