[Zope-dev] Re: Options replacing DateTime with datetime!?

Laurence Rowe l at lrowe.co.uk
Wed Sep 26 06:08:23 EDT 2007

Andreas Jung wrote:
<snip />
> Just for the logs: I gave up my work on an inplace DateTime migration..
> too compliated, too much cruft would have to remain for backward 
> compatibility. Let's see how we can address the issue in a reasonable 
> way :-)

To enable an evolutionary approach DateTime <-> datetime conversions 
must be made round-tripable. This is currently difficult as DateTimes 
have a resolution of milliseconds and datetimes a resolution of 
microseconds. I propose:

   * Increase the resolution of DateTimes to microseconds

   * Modify the DateTime constructor to handle datetime objects

   * add an asdatetime method which will return a datetime object 
(avoiding any issues with floating point conversions).

If there is support for this I will supply a patch.


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