Sage Days 3000: porting Sage to Python 3

9 July 2018 ­– 13 July 2018

Ghent University (Gent, Belgium)

Goal

This is a small-scale workshop for Sage developers with a specific focus on porting Sage to Python 3. While a lot of effort has been done for this, we hope that this workshop will accelerate this.

Organizer

• Jeroen Demeyer (Ghent University)

Participants

• Frédéric Chapoton (CNRS & Université de Strasbourg)

• Jeroen Demeyer (Ghent University)

Funding

For participants without travel grants, the OpenDreamKit project has some money available.

Some specific tasks

#1: ensure that "make doc" works : https://patchbot.sagemath.org/log/0/Ubuntu/18.04/x86_64/4.15.0-20-generic/petitbonum/2018-06-11%2009:26:28?plugin=docbuild

#1A: update some packages

#1A-a: update pynac : https://trac.sagemath.org/ticket/24838 ; https://trac.sagemath.org/ticket/24751 ; https://trac.sagemath.org/ticket/24752

#1A-b: update sagenb : https://github.com/sagemath/sagenb/pull/446

#1A-c update brial : https://trac.sagemath.org/ticket/24786

#1B: make all doctests pass

#1B-a: fix doctests in plot/plot.py : https://trac.sagemath.org/ticket/25579

#1B-b: fix doctests in src/sage/combinat/crystals/mv_polytopes.py : https://trac.sagemath.org/ticket/25559

#1B-c: fix pickling : https://trac.sagemath.org/ticket/24582

#1B-d fix all doctests of some touchstone files (for example src/sage/schemes/elliptic_curves/ell_rational_field.py)

#1B-e fix all doctests of some core files (for example src/sage/rings/integer_ring.pyx)

#2: monitor the progress

#2A: estimate how many files still have doctest failures

#2B: tools to check for progress and prevent regression

#2C: enhance the patchbot "pyflakes" plugin : https://github.com/sagemath/sage-patchbot/issues/128

#2D: patchbot doctests on sage3 (HUGE) : https://patchbot.sagemath.org/log/0/Ubuntu/18.04/x86_64/4.15.0-20-generic/petitbonum/2018-06-15%2012:41:41?short