[openstack-dev] [trove] Start to port Trove to Python 3 in Mitaka cycle?

Victor Stinner vstinner at redhat.com
Thu Feb 18 12:20:02 UTC 2016


When I began to work on porting Trove to Python 3, I was blocked by 
MySQL-Python which is not compatible with Python 3. I tried a big change 
replacing MySQL-Python with PyMySQL, since other OpenStack services also 
moved to PyMySQL. But tests fail and I'm unable to fix them :-/

Recently, I noticed that the dependency is now skipped on Python 3 
(thanks to env markers in requirements.txt), and so "tox -e py34" is 
able to create the test environment.

So I abandoned my PyMySQL change (I will reopen it later) and started 
new simpler patches following the plan of my Python 3 blueprint for Trove:

In short:

(1) fix the Python 3 gate
(2) make the Python 3 gate voting
(3) port more and more unit tests

My patches:

trove: "Add a minimal py34 test environment"
=> fix "tox -e py34", start with a whitelist of the 3 most basic unit tests

trove: "Port test_template unit test to Python 3"
=> port another unit test

openstack-infra/project-config: "Add non-voting gate-trove-python34 check"

IMHO these changes are simple and the risk of regression is low, but 
amrith wrote me "thanks for your change set but per last trove meeting, 
I think this should wait till mitaka is done, and we can pick it up 
early in newton."

I discussed with some Trove developers who are interested to start the 
Python 3 port right now. What do you think?

Maybe we can discuss that in the next Trove meeting?
(Wednesdays at 18:00 UTC in #openstack-meeting-alt)

Oops, I just missed the meeting yesterday. I was too slow to write this 
email :-)


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