On Thu, Oct 28, 2010 at 9:33 AM, cbr...@cbrownsystems.com <cbr...@cbrownsystems.com> wrote: > On Oct 28, 9:23 am, John Posner <jjpos...@optimum.net> wrote: >> On 10/28/2010 12:16 PM, cbr...@cbrownsystems.com wrote: >> >> > It's clear but tedious to write: >> >> > if 'monday" in days_off or "tuesday" in days_off: >> > doSomething >> >> > I currently am tending to write: >> >> > if any([d for d in ['monday', 'tuesday'] if d in days_off]): >> > doSomething >> >> > Is there a better pythonic idiom for this situation? >> >> Clunky, but it might prompt you to think of a better idea: convert the >> lists to sets, and take their intersection. >> >> -John > > I thought of that as well, e.g.: > > if set(["monday,"tuesday']).intersection(set(days_off)): > doSomething > > but those extra recasts to set() make it unaesthetic to me; and worse
Why not make days_off a set in the first place? Isn't it, conceptually, a set of days off? > if not set(["monday,"tuesday']).isdisjoint(set(days_off)): > doSomething > > is bound to confuse most readers. This way is more straightforward: if set(["monday", "tuesday"]) & days_off: Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
