On Mon, Sep 28, 2015 at 11:04 PM, Guido van Rossum <[email protected]> wrote: > > I had been wondering about that myself. But your implementation proposal sounds kind of expensive, doesn't it?
It could be with a naive implementation that would simply fill additional fields in the existing time.struct_time object, but we can also modify the struct_time class to compute the additional attributes only when they are requested. (I believe struct_time is currently implemented as PyStructSequence, so we will probably need to subclass that somehow.) On the other hand, I would start with a naive implementation and worry about the optimizations later. As far as I know, the POSIX layer on Windows (which is the main platform that will be affected) is already very slow, so the price of cross-platform portability may be within user expectations in this case.
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