py3: simplify richcmp of integer ring and polynomial classes

[fchapoton]

By getting rid of the calls to _richcmp.

This is a first step towards the aim of getting rid of _richcmp everywhere. There will remain to handle 2 other calls elsewhere.

CC: @jm58660 @tscrim @a-andre @jdemeyer

Component: python3

Author: Frédéric Chapoton

Branch/Commit: 58890e5

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/22379

[fchapoton]

New commits:

1564b84

py3 : try to simplify (rich)cmp of IntegerRing_class

[fchapoton]

Commit: 1564b84

[fchapoton]

Branch: u/chapoton/22379

[jdemeyer]

comment:2

I'd rather fix this as part of #22344.

[sagetrac-git]

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

5212fb8	Merge branch 'u/chapoton/22379' in 7.6.b4
6fde126	trac 22379 get rid of _richcmp in polynomials

[sagetrac-git]

Changed commit from 1564b84 to 6fde126

[sagetrac-git]

Changed commit from 6fde126 to 0e41382

[sagetrac-git]

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

0e41382

trac 22379 some doctests fixed

[sagetrac-git]

Changed commit from 0e41382 to 1284b26

[sagetrac-git]

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

1284b26

trac 22379 fixing doctests in a better way

[fchapoton]

comment:6

it seems that the bot is mostly green, please review

[sagetrac-git]

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

58890e5

trac 22379 undo one unnecessary change

[sagetrac-git]

Changed commit from 1284b26 to 58890e5

[fchapoton]

comment:8

Bot is now squarely green.

This is a simplification of the comparison framework. Once the same thing is done in #22427 for the remaining 2 calls to _richcmp (in complex numbers), one will be able to get rid of _richcmp. Let me recall that handling the comparison is one of the major problems standing on our way to python3.

[tscrim]

comment:9

While I fundamentally agree with Jeroen, I think it is better for us to make progress in the more immediate as work on #22344 has currently stalled.

[tscrim]

Reviewer: Travis Scrimshaw

[vbraun]

Changed branch from u/chapoton/22379 to 58890e5