[mythtv-commits] [MythTV/mythtv] fcb36c: Fix datetime.replace(tzinfo=None) with Python 3.13

[Roland Ernst]

  Branch: refs/heads/master
  Home:   https://github.com/MythTV/mythtv
  Commit: fcb36c32d13f6a69e728bb8ede6d36f7d71c1fd3
      https://github.com/MythTV/mythtv/commit/fcb36c32d13f6a69e728bb8ede6d36f7d71c1fd3
  Author: Roland Ernst <rcrernst at gmail.com>
  Date:   2025-10-05 (Sun, 05 Oct 2025)

  Changed paths:
    M mythtv/bindings/python/MythTV/utility/dt.py

  Log Message:
  -----------
  Fix datetime.replace(tzinfo=None) with Python 3.13

Python 3.13 fixed [gh-89039]. Now `datetime.__new__()` is also
used for `datetime.replace()`, which is called with `tzinfo=None` to
convert a time-zone aware instance to a _naive_ instance. But
`__new__()` replaces `tzinfo=None` with `loczlTZ()`, which just re-adds
the offset back.
This breaks calling `database.update()` on all database records, which
use timestamps as a datetime with the wrong timezone offset is used.

Add a new singleton LTZ and use that instead of `tzinfo=None` to keep
the old behavior to get the local timezone by default.

Fixes: #1179
[gh-89039]: https://github.com/python/cpython/issues/89039

Many thanks to github user @pmhahn providing the patch.



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