Re: [Python-Dev] Let's stop eating exceptions in dict lookup

[Raymond Hettinger]

Armin Rigo wrote: Hi Raymond, On Mon, May 29, 2006 at 02:02:25PM -0700, Raymond Hettinger wrote: Please run some better benchmarks and do more extensive assessments on the performance impact. At the moment, I'm trying to, but 2.5 HEAD keeps failing mysteriously on the tests I try to time, and even going into an infinite loop consuming all my memory - since the NFS sprint. Am I allowed to be grumpy here, and repeat that speed should not be used to justify bugs? I'm proposing a bug fix, I honestly don't care about 0.5% of speed. If it is really 0.5%, then we're fine.  Just remember that PyStone is an amazingly uninformative and crappy benchmark. The "justify bugs" terminology is pejorative and inaccurate.  It is clear that the current dict behavior was a concious design decision and documented as such.  Perhaps the decision sucked and should be changed, but it is not a bug. and I consider myself an everyday Python user, Something may have been lost in translation.  Using it every day is not the same as being an everyday user ;-)  There is no doubt that you routinely stress the language in ways ways that are not at all commonplace. All I'm asking is that there be a well thought-out assessment of whether the original design decision was struck the appropriate balance between practicality Raymond

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