If you are seeing this error when implementing and running the upgrade
check command in your project:
Traceback (most recent call last):
File
"/home/osboxes/git/searchlight/.tox/venv/lib/python3.5/site-packages/oslo_upgradecheck/upgradecheck.py",
line 184, in main
return conf.command.action_fn()
File
"/home/osboxes/git/searchlight/.tox/venv/lib/python3.5/site-packages/oslo_upgradecheck/upgradecheck.py",
line 134, in check
print(t)
File
"/home/osboxes/git/searchlight/.tox/venv/lib/python3.5/site-packages/prettytable.py",
line 237, in __str__
return self.__unicode__()
File
"/home/osboxes/git/searchlight/.tox/venv/lib/python3.5/site-packages/prettytable.py",
line 243, in __unicode__
return self.get_string()
File
"/home/osboxes/git/searchlight/.tox/venv/lib/python3.5/site-packages/prettytable.py",
line 995, in get_string
lines.append(self._stringify_header(options))
File
"/home/osboxes/git/searchlight/.tox/venv/lib/python3.5/site-packages/prettytable.py",
line 1066, in _stringify_header
bits.append(" " * lpad + self._justify(fieldname, width,
self._align[field]) + " " * rpad)
File
"/home/osboxes/git/searchlight/.tox/venv/lib/python3.5/site-packages/prettytable.py",
line 187, in _justify
return text + excess * " "
File
"/home/osboxes/git/searchlight/.tox/venv/lib/python3.5/site-packages/oslo_i18n/_message.py",
line 230, in __add__
raise TypeError(msg)
TypeError: Message objects do not support addition.
It is due to calling oslo_i18n.enable_lazy() somewhere in the command
import path. That should be removed from the project since lazy
translation is not supported in openstack and as an effort was abandoned
several years ago. It is probably still called in a lot of "big
tent/stackforge" projects because of initially copying it from the more
core projects. Anyway, just remove it.
I'm talking with the oslo team about deprecating that interface so
projects don't mistakenly use it and expect great things to happen.
--
Thanks,
Matt
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