[Zope3-dev] DateTime, zones, and arithmetic

[Hannu Krosing]

On Tue, 2002-03-12 at 17:20, Phillip J. Eby wrote:
> 
> One of the nice things about a mutable datetime, however, is that it makes 
> certain kinds of calendar operations trivial.  For example::
> 
>     someDate = datetime() # default to today
>     someDate.day = 1      # first of this month

It would be awfully nice and pythonic to be able to do 

      someDate.day = -1

and get last of this month, especially if it can be done in a way that
makes a consequtive

      someDate.month += 1

return last of next month 

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Hannu