Public bug reported:
[Description]
The latest release of python3-apt (2.0.1ubuntu0.20.04.1+esm1) is setting
the python version to:
$ pip list | grep apt
python-apt 2.0.1-ubuntu0.20.04.1-esm1
This version is not compliant with PEP440 and breaks with other software
that will check versions:
$ python3
Python 3.8.10 (default, Nov 17 2025, 15:36:31)
[GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from packaging.version import parse, Version
>>> Version("2.0.1-ubuntu0.20.04.1-esm1").micro
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3/dist-packages/packaging/version.py", line 277, in
__init__
raise InvalidVersion("Invalid version: '{0}'".format(version))
packaging.version.InvalidVersion: Invalid version: '2.0.1-ubuntu0.20.04.1-esm1'
The latest non ESM version works correctly:
$ pip list | grep apt
python-apt 2.0.1+ubuntu0.20.4.1
Notice the replacement of (+) with (-) between the version (2.0.1) and
the ubuntu0.20.04.1. (+) is the correct separator for local versions:
https://peps.python.org/pep-0440/#local-version-segments
https://peps.python.org/pep-0440/#development-release-separators
** Affects: python-apt (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2137070
Title:
python3-apt 2.0.1ubuntu0.20.04.1+esm1 version does not comply with PEP
440
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