[Python-Dev] Draft PEP for time zone support.

Barry Warsaw barry at python.org
Wed Dec 12 03:58:49 CET 2012

On Dec 11, 2012, at 04:23 PM, Lennart Regebro wrote:

>A new ``is_dst`` parameter is added to several of the `tzinfo` methods to
>handle time ambiguity during DST changeovers.

>``None`` will raise an ``AmbiguousTimeError`` exception if the time specified
>was during a DST change over. It will also raise a ``NonExistentTimeError``
>if a time is specified during the "missing time" in a change to DST.

I think None should be the default.

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