Finding specific date ranges

kyosohma at gmail.com kyosohma at gmail.com
Thu Sep 6 20:05:46 CEST 2007


On Sep 6, 12:41 pm, Tim Golden <t... at timgolden.me.uk> wrote:
> > Thanks! I'll try it both ways and see if there's any appreciable
> > difference in speed, although since it will be packaged into an
> > executable, that may not be an issue anyway.
>
> > Mike
>
> I honestly doubt there's any advantage to my approach, certainly
> not in terms of speed. It's really only if it happens to suit
> your mind better, or take advantage of structures you might
> already have in place, etc.
>
> TJG

For completeness, here's my method for comparison's sake:

<code>

date_list = [('12/31/2006', '01/13/2007'),
             ('01/14/2007', '01/27/2007'),
             ('01/28/2007', '02/10/2007'),
             ('02/11/2007', '02/24/2007'),
             ('02/25/2007', '03/10/2007'),
             ('03/11/2007', '03/24/2007'),
             ('03/25/2007', '04/07/2007'),
             ('04/08/2007', '04/21/2007'),
             ('04/22/2007', '05/05/2007'),
             ('05/06/2007', '05/19/2007'),
             ('05/20/2007', '06/02/2007'),
             ('06/03/2007', '06/16/2007'),
             ('06/17/2007', '06/30/2007')
             ]
vac_periods = []
found = False
for d in date_list:
    begin = d[0][0:2]
    end = d[1][0:2]
    if begin == end and found == False:
        vac_periods.append(d)
        found = True
    else:
        found = False
print vac_periods

</code>

Isn't it kind of late in the day over there, Tim? Anyway, your method
is probably clearer to read whereas mine doesn't require anything to
be imported. I didn't even realize there was a calendar module...or
maybe I forgot about it.

Mike




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