Hi!

While rebuilding the python related packages against the Python 3.15rc2
version we found that python-datamodel-code-generator fails to build
from source:
https://debusine.debian.net/debian/r-python-python3.15/artifact/4856740/

 From the log, the error seems to be:

   ERROR tests/test_build_architecture_docs_script.py - ValueError:
'3.15' is no...
   ERROR tests/test_build_playground_assets_script.py - ValueError:
'3.15' is no...
   ERROR tests/test_build_schema_docs_script.py - ValueError: '3.15' is
not a va...
   ERROR tests/test_http.py - ValueError: '3.15' is not a valid
PythonVersion
   !!!!!!!!!!!!!!!!!!! Interrupted: 38 errors during collection
!!!!!!!!!!!!!!!!!!!
   ====================== 75 deselected, 38 errors in 4.34s
=======================

It looks like the code needs to be updated to accept 3.15 as a valid
Python version.

Setting the severity to important for now. Once Python 3.15 is released
and later added to python3-defaults, this bug will become release
critical.

We believe that the bug you reported is fixed in the latest version of
python-datamodel-code-generator, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1149337@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Nico Della Torre <nicoz91@ubuntu.com> (supplier of updated python-datamodel-code-generator package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Thu, 22 Oct 2026 17:20:49 +0100
Source: python-datamodel-code-generator
Architecture: source
Version: 0.85.0-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Python Team <team+python@tracker.debian.org>
Changed-By: Nico Della Torre <nicoz91@ubuntu.com>
Closes: 1149337 1150471
Changes:
 python-datamodel-code-generator (0.85.0-1) unstable; urgency=medium
 .
   * Team upload.
   * New upstream release:
     - Support Pydantic 2.14 (closes: #1150471).
   * Support Python 3.15 (Closes: #1149337).
   * Refresh isort-10.patch and extend it to the isort extra.
   * Build-Depend on python3-lxml, python3-trustme and
     python3-typing-extensions.
   * Update upstream URLs to the new GitHub organization.
   * Build-Depend on ruff and enable the tests that use its executable.
   * Skip new tests needing httpx2, grpc-tools or upstream CI files.
   * Bypass the pybuild dummy proxy for tests using a local HTTP server.
   * Depend explicitly on black, the default formatter: dh_python3 ignores
     the new environment markers on it.
   * Make datamodel-codegen depend on python3-datamodel-code-generator.
   * Include architecture.mk so that msgspec tests also run in autopkgtest.
   * Tolerate missing msgspec in more test modules, and skip the new tests
     needing it on architectures without it.
   * Skip tests needing a generated _version.py in src/ in autopkgtest.
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