py3: Make doctest pass in combinat/rigged_configurations module

[vklein]

This ticket fix the last py3 failures in combinat/rigged_configurations module.

For the TypeError: unsupported format string passed to sage.rings.rational.Rational.__format__ another approach is to implement a __format__ method in sage.rings.rational.Rational, unfortunately it will not solve the cases with NoneType?. For this reason i think string formatting support for sage's Rational should be done in another ticket if needed.

[chapoton]

ok, good to go. But would you please first fix the pyflakes warnings ?

[vklein]

Sure, i will do it this morning.

[git]

Branch pushed to git repo; I updated commit sha1. New commits:

​8596208

Trac #26805: Remove useless assignement

[vklein]

@chapoton I commented vct rather than deleting the line to keep consistency with the comments below in the code. Do you think the comments

        # vct = self.parent()._folded_ct
        # sigma = vct.folding_orbit()
        # gammatilde = list(vct.scaling_factors())
        # gammatilde[-1] = 2

are helpful or do you think we should delete them?

[chapoton]

oh, we can keep them.

green bot => positive review.

Do you have a patchbot at your disposal that you could launch on this ticket ? Mines are already busy right now.

[vklein]

Not right now (some computing in progress). I will try this afternoon.

[embray]

This tickets were closed as fixed after the Sage 8.5 release.