Word_class compares using < if == is requested

[jdemeyer]

This is bad because it compares using < and > even if the user only wanted to know if two things were equal:

                    if key_cs < key_co:
                        return rich_to_bool(op, -1)
                    elif key_cs > key_co:
                        return rich_to_bool(op, 1)

Instead, richcmp_item should probably be used here.

CC: @fchapoton

Component: combinatorics

Author: Jeroen Demeyer

Branch/Commit: 7dda4ac

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/26937

[jdemeyer]

Branch: u/jdemeyer/word_class_compares_using___if____is_requested

[jdemeyer]

New commits:

7dda4ac

Use richcmp_item to compare Word_class

[jdemeyer]

Commit: 7dda4ac

[jdemeyer]

Author: Jeroen Demeyer

[tscrim]

comment:3

The error in geometry/cone.py seems unrelated. So LGTM.

[tscrim]

Reviewer: Travis Scrimshaw

[vbraun]

Changed branch from u/jdemeyer/word_class_compares_using___if____is_requested to 7dda4ac