[Rivet] No python3 versions of new Rivet/Yoda?

[Frank Siegert]

Hi Ivan, all,

I have installed Rivet and Yoda on a system with Python3 (i.e.
/usr/bin/python is version 3.7) and it generally works. So there is no lack
of Python3 versions per se.

But there are a few small remaining issues I noticed during some simple
tests:

- rivet-mkhtml needs to get rid of a few '.encode("utf-8")' instances
Here it's not completely clear to me whether this is backward compatible to
Python2.

- bin/make-plots needs to be treated to a '2to3 -w make-plots' conversion.
Same as above, but I think it should be fine.

- there is an error in yodamerge where I'm not actually sure whether it's a
problem with Python3 or just a change in the YODA API:
$ yodamerge Rivet.yoda Rivet1.yoda
Traceback (most recent call last):
  File "/usr/bin/yodamerge", line 274, in <module>
    ao_out.points[i].setErrs(dim , (ep_i[var], em_i[var]),var)
  File "include/Point.pyx", line 75, in yoda.core.Point.setErrs
  File "stringsource", line 147, in
pair.from_py.__pyx_convert_pair_from_py_double__and_double
TypeError: must be real number, not tuple
YODA developers might be able to tell right away?

So if you in Genser have some experience with Python2 vs. 3 maintenance and
can provide advise on the backward compatibility etc of e.g. the changes
above (and further testing), then I'm happy to follow up and dust off my
(little) Mercurial knowledge to get the remaining Python3 changes into the
Rivet repo.

Best,
Frank


On Tue, 14 Aug 2018 at 18:09, Andy Buckley <andy.buckley at cern.ch> wrote:

> Hi Ivan,
>
> We won't be releasing/maintaining separate codebases, but I think the
> libraries should now be Python3 compatible: Frank Siegert did a lot of
> compatibility work and I think is using Py3 personally. I noticed recently
> that we are still using optparse rather than argparse for command-line
> option parsing in the scripts, but maybe that has been worked around...
> I'll let him comment.
>
> Cheers,
> Andy
>
> *Dr Andy Buckley, Senior Lecturer / Royal Society University Research
> Fellow*
> Particle Physics Experiment Group, University of Glasgow
> On Aug 14 2018, at 4:34 pm, Ivan Razumov <ivan.razumov at cern.ch> wrote:
>
>
>
> Dear Rivet developers,
>
> we have noticed the lack of Python3 versions for the new release of Rivet
> and Yoda. It this intentional (i.e. the code is now compatible with both
> Python2 and Python3),
> or they will be released later?
>
> Thanks,
> Ivan for the GENSER team
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>
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