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Date:	Sun, 20 Mar 2022 10:00:38 -0600
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Subject:	Re: deprecate pytz?
To:	cygwin AT cygwin DOT com
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From:	Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
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On 2021-12-21 09:06, Marco Atzeri via Cygwin-announce wrote:
> Several python packages have been added to the Cygwin distribution
> and at the same time the updated packages for 3.6/3./3.8
> have been uploaded.

> python39-pytz                           2021.3-1
Suggesting that pytz should be deprecated and eventually dropped.
There is a lot of discussion on the IANA TZ mailing list about support 
of the IANA TZ DB (tzdata) in languages other than C, and there has been 
discussion of the official python standard library module support of 
tzdata, and the problems of correctly using pytz:

https://blog.ganssle.io/articles/2018/03/pytz-fastest-footgun.html

requiring close reading and following of its limitations:

	https://pypi.org/project/pytz/

	https://github.com/stub42/pytz

together with it being superceded by official support of IANA TZ DB with 
a standard library compiled zoneinfo module built on the datetime module:

	https://peps.python.org/pep-0615/

backported to 3.6+ as the backports.zoneinfo module:

	https://zoneinfo.readthedocs.io/en/latest/

	https://github.com/pganssle/zoneinfo/

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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