Oh! I really though you were just adding 1 or 0 to those variables. In clude the loop next time! ;)
You can accumulate the values by doing this instead: alpha, beta = (alpha + (1 if some_calculation(params) else 0), beta + (1 if other_calculation(params) else 0)) > Date: Fri, 7 Jun 2013 23:16:22 -0500 > From: python.l...@tim.thechases.com > To: carlosnepomuc...@outlook.com > CC: python-list@python.org > Subject: Re: Idiomatic Python for incrementing pairs > > On 2013-06-08 07:04, Carlos Nepomuceno wrote: > > alpha, beta = (1 if some_calculation(params) else 0, 1 if > > other_calculation(params) else 0) > > This one sets them to absolute values, rather than the incrementing > functionality in question: > > > > alpha += temp_a > > > beta += temp_b > > The actual code in question does the initialization outside a loop: > > alphas_updated = betas_updated = 0 > for thing in bunch_of_things: > a, b = process(thing) > alphas_updated += a > betas_updated += b > > and it just bugs me as being a little warty for having temp > variables when Python does things like tuple-unpacking so elegantly. > That said, as mentioned in a contemporaneous reply to Jason, I haven't > found anything better that is still readable. > > -tkc > > >
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