On Aug 13, 2005, at 11:53 PM, Stuart Bishop wrote:
...
Gary Poster wrote:
On a somewhat unrelated note, I noticed that dst() and tzname() were
not implemented per the standard library's spec
...
...snip explanation...
Ah, that makes a lot of sense. I had not understood all of that
before you clarified it. Thanks.
...
Therefore I further propose that the zone attribute be exposed in
docs
as a reliable attribute of the pytz timezones, and the key through
which it is accessible from pytz.timezone.
Sure. I consider all of the attributes and methods not prefied with
'_' as
reliable, and the zone attribute is already being testing in the
pytz.timezone docstring tests.
Cool.
(The tzname() output isn't useful for
anything besides display anyway - its not unique. Australia has
been know to
have more than 6 different definitions of EST in a year, as it is
used to
mean both Eastern Standard Time and Eastern Summer Time and the
multiple
regions that use it will often choose different dates to do the
transition.)
:-)
I've added lines accessing tz.zone to the main README.txt docs.
Great, thanks.
If that is a contract, BaseTZInfo's __reduce__ could instead
return pytz.timezone, (self.zone)
, which might be more forward compatible (and not require DstTzInfo's
__init__ signature to change).
Something like this is preferable I think. However, it is more
complicated.
Because a DST aware tzinfo implementation for a timezone is
actually a set
of tzinfo instances, we need to ensure that the correct item in
that set is
returned.
I think I've got this all setup correctly now - I've just checked
it in to
my local dev branch and to:
svn+ssh://svn.zope.org/repos/main/Zope3/branches/stub-pytzpickle
If that looks fine to people, I'll put that out as the next pytz
release and
merge that branch into the 3.1 and trunk branches.
Thanks for doing this! I'm no pickle expert, but the implementation
jibed with what I do know, and the tests seemed very reasonable. +1
from me.
Thanks again
Gary
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