On Wednesday 18 February 2009 03:10:41 pm johnf wrote: > Hi, > > I need to develope a routine that will provide the some dates between a > starting date and an ending date. The dates will be used to schedule > instructors for specific class dates from the list of available dates. > Class is normally on Monday, Wedesday, and Friday (or any days of the week > including Sat and Sun). If the length of the class is 6 months (01/01/09 - > 06/30/09). I need to generate all the dates that would match the Monday, > Wedesday, and Friday (or whatever days are used for the class) for the > entire period. > > I have done this is FoxPro in the past. Now I'm in python 2.5. > > Now the problem is there appears many ways to deal with dates in python. > time(), calendar(), datetime(), dateutil(). Which is the easy way guys??? > And is there something already written I should be using???? Also there is > something called 'mx'. > > Thanks in advance.
Kent Johnson provided the following: This is pretty easy using datetime.date and timedelta. For example, this shows all the M, W, F between (more or less) your given dates: In [1]: from datetime import date, timedelta In [3]: end = date(2009, 6, 30) In [4]: start = date(2009, 1, 4) # a Sunday In [7]: offsets = [timedelta(days=offset) for offset in (1, 3, 5) ] # Mon, Wed, Fri In [8]: current = start In [9]: while current < end: ...: for offset in offsets: ...: print current + offset ...: current += timedelta(days=7) 2009-01-05 2009-01-07 2009-01-09 2009-01-12 2009-01-14 2009-01-16 ...etc Kent thanks Kent. This appears to work. I was not aware of datetime.timedelta(). I really think there should be a place to find this type of information. I'll study the module. Again, thanks. -- John Fabiani _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
