[Piglit] Convert from python2 to python3

[Ken Phillis Jr]

On Mon, Feb 24, 2014 at 9:10 PM, Matt Turner <mattst88 at gmail.com> wrote:
> On Mon, Feb 24, 2014 at 11:47 AM, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
>> On Mon, Feb 24, 2014 at 2:42 PM, Dylan Baker <baker.dylan.c at gmail.com> wrote:
>>> This series makes the transition from python2 to python3. In general
>>
>> Out of curiousity, what's the motivation for this? I've been able to
>> avoid python3 quite nicely thus far, all it seems to do is break
>> compatibility with existing setups... Admittedly piglit is targeted at
>> developers, who probably have the latest and greatest stuff, so
>> perhaps not a huge issue.
>
> Python 2.7 support sucks. Piglit with concurrency was simply broken
> with Python 2.7.4 and 2.7.5 because of some regression related to
> threading. Then piglit was broken again after the timeouts code was
> committed in November, until it was reverted, as far as we can tell
> because of a Python bug. And Python 3.3 just has the necessary support
> for doing this without rolling it ourselves.
>
> Basically, we're tired of relying on old and dead versions of python
> which are ill maintained and break often.


I agree with the forced update to Python 3, but I would suggest making
some tweaks to keep this working on a lot of the long-term desktop
environments because it is better to have a stable software base when
writing tests and improving the actual driver.

Debian: https://packages.debian.org/wheezy/python3 - The minimum
supported version of the releases is Python3 version 3.1.3
Ubuntu: http://packages.ubuntu.com/lucid/python3 - Minimum Python3
version of 3.1.2 ( on Ubuntu 10.04 LTS ), but the current long term
release ( 12.04 LTS ) features python 3.2.3.
Gentoo: This always tends to carry the latest python release so this
probably is not going to be an issue.
FreeBSD: FreeBSD 9 includes python version 3.2.3 ( or similar ) in a
package so this should work out well.
Red Hat based distributions: These appear to only have Python 2.7
based on the package searches I can find. I may be wrong, but it would
be a good idea to at least verify this.