[Python-ideas] Please reconsider the Boolean evaluation of midnight

[Rob Cliffe]

On 05/03/2014 17:27, Alexander Belopolsky wrote:
>
> On Wed, Mar 5, 2014 at 11:38 AM, Shai Berger <shai at platonix.com 
> <mailto:shai at platonix.com>> wrote:
>
>     So, I rephrase my request: Would anybody object to a silent
>     warning issued
>     whenever a time-object is evaluated as Boolean?
>
>
> I would.  Users should not be penalized for using a documented behavior.
We hope that the Python documentation describes the semantics of the 
language and packages as completely as is reasonably possible.
So you are effectively saying that no backwards-incompatible change 
should ever be made.
If we accepted that, this discussion would end now.
>  There are legitimate uses for bool(midnight) being False.  Midnight 
> is special in many contexts.  For example, it is uncertain whether 
> midnight belongs to the previous or next day.  If your application 
> wants to group midnight differently from other times - it is perfectly 
> fine to use "if dt.time()" instead of a more verbose "if dt.time() != 
> datetime.time(0, 0)".
>
>
>
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