[Datetime-SIG] A local timezone class

Guido van Rossum guido at python.org
Sat Aug 29 00:53:40 CEST 2015

I've written a simple class that implements a local timezone tzinfo object,
deferring to what the time module exposes about the local zone.


There are two variations: one for systems that support tm_gmtoff and
tm_zone, one for systems without those.

Output of the test program:

Fri Aug 28 15:50:22 2015 PDT (-0700)
Wed Feb 24 15:50:22 2016 PST (-0800)

I'm not entirely sure why we didn't add this to the stdlib ages ago. (Maybe
out of a sense of perfectionism, since time.localtime() may be wrong for
dates in the past or future where different DST rules or a different
standard offset apply? But why would we care, if we're fine with the time
module's behavior?)

--Guido van Rossum (python.org/~guido)
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