On Sep 12, 2014, at 11:33 AM, Mike Bayer <mba...@redhat.com> wrote:

> On Sep 12, 2014, at 11:24 AM, Sean Dague <s...@dague.net> wrote:
>> On 09/12/2014 11:21 AM, Mike Bayer wrote:
>>> On Sep 12, 2014, at 7:39 AM, Sean Dague <s...@dague.net> wrote:
>>>> I assume you, gentle OpenStack developers, often find yourself in a hair
>>>> tearing out moment of frustration about why local unit tests are doing
>>>> completely insane things. The code that it is stack tracing on is no
>>>> where to be found, and yet it fails.
>>>> And then you realize.... that part of oslo doesn't exist any more....
>>>> except there are still pyc files laying around. Gah!
>>>> I've proposed the following to Nova and Python novaclient -
>>>> https://review.openstack.org/#/c/121044/
>>>> Which sets PYTHONDONTWRITEBYTECODE=true in the unit tests.
>>> my VPN was down and I didn’t get this thread just now, but I am strongly -1 
>>> on this as added to tox.ini, my response is 
>>> http://lists.openstack.org/pipermail/openstack-dev/2014-September/045873.html.
>>> Short answer: if you want this feature, put PYTHONDONTWRITEBYTECODE into 
>>> *your* environment.  Don’t force it on our automated tests or on my 
>>> environment.   .pyc files make a difference in behavior, and if we banish 
>>> them from all testing, then our code is never tested within the environment 
>>> that it will normally be run in after shipment.
>>> I’d far prefer a simple script added to tox.ini which deletes orphaned .pyc 
>>> files only, if a change to tox.ini must be made.
>> Your example in the other thread includes the random seed behavior,
>> which is already addressed in new tox. So I don't see that as an issue.
> Will these patches all be accompanied by corresponding PYTHONHASHSEED 
> settings?   Also why don’t you want to place PYTHONDONTWRITEBYTECODE into 
> your own environment?    I don’t want this flag on my machine.

not to mention PYTHONHASHSEED only works on Python 3.  What is the issue in tox 
you’re referring to ?

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