Replace some deprecated python functions in sage/algebras

[a-andre]

We should prepare moving to Python3.

Execute

2to3 -f has_key -f except -f idioms -f ne -f raise

for each *.py in sage/algebras.

See http://docs.python.org/library/2to3.html#fixers for meaning of the parameters.

---

Apply attachment: trac_12461.patch and attachment: trac_12461_2b.patch to the Sage library repository.

Depends on #12484

Component: misc

Author: André Apitzsch

Reviewer: David Loeffler

Merged: sage-5.0.beta11

Issue created by migration from https://trac.sagemath.org/ticket/12461

[loefflerd]

comment:2

This conflicts with #12484 (merged in 5.0.beta5) -- can you rebase it?

[loefflerd]

Work Issues: needs rebase

[a-andre]

Attachment: trac_12461.patch.gz

[a-andre]

comment:3

Rebased.

[a-andre]

Changed work issues from needs rebase to none

[loefflerd]

comment:4

I've added #12484 as a dependency (since there is a copy of the patchbot still running against 4.8)