Add normalization to clonable lists

[hivert]

The patch adds a new support class in list_clone.pyx for lists with a normalization methods. The normalization method is called both after creation and clone/modification. This will be needed for rooted trees.

I also take the opportunity of cleaning up the bad usage of assert in
the examples and replaced them by if ... : raise ValueError.

Apply

• attachment: trac_11407-list_clone_improve-fh.patch

Depends on #11308

CC: @sagetrac-sage-combinat @tscrim

Component: combinatorics

Keywords: clone normalization Cernay2012, days49

Author: Florent Hivert

Reviewer: Travis Scrimshaw

Merged: sage-5.12.beta2

Issue created by migration from https://trac.sagemath.org/ticket/11407

[hivert]

Description changed:

--- 
+++ 
@@ -1 +1,3 @@
+Patch in preparation on sage-combinat queue
 
+Depend on #11308

[hivert]

Description changed:

--- 
+++ 
@@ -1,3 +1,2 @@
 Patch in preparation on sage-combinat queue
 
-Depend on #11308

[hivert]

Dependencies: #11308

[hivert]

Description changed:

--- 
+++ 
@@ -1,2 +1,4 @@
-Patch in preparation on sage-combinat queue
+The patch adds a new support class in `list_clone.pyx` for lists with a normalization methods. The normalization method is called both after creation and clone/modification. This will be needed for rooted trees.
 
+**Apply** [attachment: trac_11407-list_clone_improve-fh.patch]
+

[hivert]

Changed keywords from clone normalization to clone normalization Cernay2012

[hivert]

comment:5

I just pushed a new patch which fixes the failing doctests

[loefflerd]

Work Issues: rebase to current beta

[loefflerd]

comment:6

Patch does not apply to 5.0.beta11, I'm afraid