On Fri, Apr 15, 2011 at 10:52 PM, Steven D'Aprano <steve+comp.lang.pyt...@pearwood.info> wrote: > On Fri, 15 Apr 2011 13:58:22 +1000, Chris Angelico wrote: > >> The dictionary is potentially a lot larger than this particular set of >> values (it's a mapping of header:value for a row of a user-provided CSV >> file). Does this make a difference to the best option? (Currently I'm >> looking at "likely" figures of 60+ keys in the dictionary and 3-8 >> postage options to pick up, but both of those could increase >> significantly before production.) > > SIXTY keys? > > When you get to sixty thousand keys, it might take a few seconds to > process.
This whole code is inside a loop that we took, in smoke testing, to a couple hundred million rows (I think), with the intention of having no limit at all. So this might only look at 60-100 headers, but it will be doing so in a tight loop. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
