[Pkg-mailman-hackers] Bug#1123381: django-mailman3: FTBFS: AttributeError: 'super' object has no attribute 'dicts' and no __dict__ for setting new attributes

[Colin Watson]

Control: reassign -1 python3-django 3:4.2.26-1
Control: affects -1 src:django-mailman3
Control: fixed -1 3:4.2.27-2
Control: close -1

On Tue, Dec 16, 2025 at 08:26:44PM +0000, Santiago Vila wrote:
>  File "/usr/lib/python3/dist-packages/django/template/context.py", line 39, in __copy__
>    duplicate.dicts = self.dicts[:]
>    ^^^^^^^^^^^^^^^
>AttributeError: 'super' object has no attribute 'dicts' and no __dict__ for setting new attributes

Fixed by python-django 3:4.2.27-2:

python-django (3:4.2.27-2) unstable; urgency=medium

    * Team upload.
    * Backport various upstream fixes for newer Python versions (closes:
      #1122185):
      - Fixed tests for test --parallel option on Python 3.14+.
      - Fixed copying BaseContext and its subclasses on Python 3.14+.
      - Fixed OtherModelFormTests.test_prefetch_related_queryset() test on
        Python 3.14+.
      - Adjusted test_strip_tags following Python behavior change for
        incomplete entities.
    * Revert "Mark that Python 3.14 is not supported yet", since it now is.

   -- Colin Watson <cjwatson at debian.org>  Wed, 17 Dec 2025 10:23:30 +0000

-- 
Colin Watson (he/him)                              [cjwatson at debian.org]