Thats for all the responses. I'm going to use Kents method. I'll let you know what I work out. Rudiger - I did think about that. Luckily I am generating the list with a start datetime and end datetime so if those don't exist in either end if the list I can insert them after I check the dates between.
On Fri, Oct 9, 2009 at 5:11 PM, Rüdiger Wolf < rudiger.w...@throughputfocus.com> wrote: > Ah! but are we sure that the max and min dates are actually in the list? > If there are 'missing dates' it might just be possible that it is the > max or min date that is missing. > > On Fri, 09 Oct 2009 16:43 -0400, "Kent Johnson" <ken...@tds.net> wrote: > > On Fri, Oct 9, 2009 at 3:16 PM, Glen Zangirolami <digitalma...@gmail.com > > > > wrote: > > > If i have a list of dates: > > > date_list = > > > > ['2008-12-29','2008-12-31','2008-01-01','2008-01-02','2008-01-03','2008-01-05'] > > > How do I find the missing dates in the range of dates and insert them > into > > > the list so I get? > > > date_list = > > > > ['2008-12-29','2008-12-30','2008-12-31','2008-01-01','2008-01-02','2008-01-03','2008-12-04','2008-01-05'] > > > > I would do something like the following using datetime.datetime and > > datetime.timedelta: > > - convert each list item to a datetime object using datetime.strptime() > > - find the min and max datetimes in the list (use min() and max() > > - create a new list by incrementing the min date by timedelta(days=1) > > until it hits the max date > > - convert the new list to strings using datetime.strftime() > > > > Kent > >
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