This bug was fixed in the package python-oslo.utils - 3.41.1-0ubuntu2
---------------
python-oslo.utils (3.41.1-0ubuntu2) focal; urgency=medium
* Non-strict relfection comparison is not possible in py3.8+. LP: #1841072
* Use python3 when detecting module name from setup.py in autopkgtest.
-- Dimitri John Ledkov <x...@ubuntu.com> Mon, 18 Nov 2019 11:23:18
+0000
** Changed in: python-oslo.utils (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1841072
Title:
test_reflection.CallbackEqualityTest.test_different_instance_callbacks
fails on Python 3.8
Status in oslo.utils:
New
Status in python-oslo.utils package in Ubuntu:
Fix Released
Status in python3-defaults package in Ubuntu:
New
Bug description:
When running the unit test on Python 3.8, it fails with the following
traceback:
oslo_utils.tests.test_reflection.CallbackEqualityTest.test_different_instance_callbacks
---------------------------------------------------------------------------------------
Captured traceback:
~~~~~~~~~~~~~~~~~~~
b'Traceback (most recent call last):'
b' File "/tmp/oslo.utils/oslo_utils/tests/test_reflection.py", line 156,
in test_different_instance_callbacks'
b' self.assertTrue(reflection.is_same_callback(b.b, c.b,
strict=False))'
b' File
"/tmp/oslo.utils/.tox/py38/lib/python3.8/site-packages/unittest2/case.py", line
702, in assertTrue'
b' raise self.failureException(msg)'
b'AssertionError: False is not true'
b''
This is apparently caused by a behavior change in Python 3.8 due to
[1]. I have confirmed the different behavior by running tests manually
on 3.6, 3.7 (both return True) and 3.8.
According to [2], only taskflow seems to be using that method now, and
it is not changing the default value for the "strict" parameter.
[1] - https://bugs.python.org/issue1617161
[2] - http://codesearch.openstack.org/?q=is_same_callback&i=nope&files=&repos=
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