[Rivet] Python 3

[Andy Buckley]

Since we already require c++11 compatibility in the compiler, the SLC6
default setup already needs to be overridden. I think all such setups
will also result in Python >= 2.7. So I'm happy with ditching
SLC6/Py2.6.

Andy


On 20 November 2017 at 16:06, Frank Siegert <frank.siegert at cern.ch> wrote:
> Thanks David for going through this.
>
> In fact, the differences in string (encoding) handling are exactly why
> I never pushed a complete Python3 transition into the repository. In
> particular the question of backward compatibility was by far
> non-trivial. At this point now, do we agree to not care about Python
> 2.6 users (SL6!) anymore? That's fine by me.
>
> Have you already implemented the fallbacks for that? I have a system
> with Python3 as default, so could help testing if you want.
>
> Cheers,
> Frank
>
>
> On 20 November 2017 at 14:08, David Grellscheid
> <david.grellscheid at durham.ac.uk> wrote:
>> Hi Andy,
>>
>> 2to3 doesn't cover text IO very much, where Py3 (rightly) forces you to
>> be careful about the encoding, and makes a strongly typed distinction
>> between texts and byte sequences.
>>
>>   David
>>
>>
>> Once it's checked, we can have emoji .info files ;-)
>>
>>
>>
>> On 18/11/2017 12:56, Andy Buckley wrote:
>>> Thanks David. Actually, I thought I'd already done everything flagged
>>> up by 2to3 other than the overzealous list() calls on every returned
>>> iterator... guess I missed some.
>>>
>>> Andy
>>>
>>>
>>> On 17 November 2017 at 22:33, David Grellscheid
>>> <david.grellscheid at durham.ac.uk> wrote:
>>>> Hi all,
>>>>
>>>> I've gone through the core features of YODA and Rivet, and made them
>>>> Python-3-compatible on the default branches. I have not tested all
>>>> helper scripts yet, so if you notice anything odd, please let me know,
>>>> and I'll fix it. I'll go through everything in the next days.
>>>>
>>>> Also, I haven't run a python 2.6 test yet, most likely the UI is broken
>>>> for such old pythons now, and I'm not sure how much effort the
>>>> compatibility would be yet, we'll need to see if it's even worth trying.
>>>> Python 2.7.3 (April 2012) onwards should work.
>>>>
>>>> See you,
>>>>
>>>>   David
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>>>
>>>
>>>
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-- 
Dr Andy Buckley, Lecturer / Royal Society University Research Fellow
Particle Physics Expt Group, University of Glasgow