On Sat, 10 Mar 2007, Greg Ewing wrote:
> Collin Winter wrote:
> > Treat dates as if they have a time-part of midnight. This is my preferred
> > solution, and it is already what the datetime module does, for example,
> > when subtracting two dates.
>
> Does it really? Seems to me you can pick any time of day
> to be the representative time and get the same result
> when subtracting two dates, as long as you pick the same
> one for both dates. So it's not really assuming anything
> here.
It certainly gives that appearance:
>>> from datetime import datetime
>>> datetime(2007, 1, 2) - datetime(2007, 1, 1, 0, 0, 0)
datetime.timedelta(1)
>>> str(_)
'1 day, 0:00:00'
The behaviour to the end user exposes the midnight assumption,
regardless whether it's explained by saying the constructor
makes the assumption or the subtraction makes the assumption.
-- ?!ng
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