Public bug reported:
Ubuntu version: 24.04.1
Package version: 3.5.0.1-3build1
Python version: 3.12.3
I encountered this problem after upgrading from jammy -> nobel and
installing Trac 1.6. I do not believe this is a problem with Trac
however.
The trac.web.modpython_frontend handler supplied by Trac indirectly ends
up in platform._sys_version which requires sys.version to be of a
specific format: "X.Y.Z (buildno, builddate, buildtime) [compiler]", and
raises ValueError if it cannot be parsed.
However, setting the handler to mod_python.testhandler reveals that
sys.version is just "X.Y.X".
So the sys.version that is being set by mod_python is not compatible
with the standard python platform module.
The error that appears in the Apache log is:
...
File "/usr/lib/python3.12/platform.py", line 1108, in _sys_version ...
ValueError: failed to parse CPython sys.version: '3.12.3'
Adding this hack to the trac.web.modpython_frontend module resolves the
problem:
try:
sys.version.index(" ")
except ValueError:
sys.version += ' (dummy, dummy, dummy) [dummy]'
** Affects: libapache2-mod-python (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2078527
Title:
sys.version from mod_python cannot be parsed by the python platform
module
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