#15810: Immutable directed graphs should know that they are directed
-------------------------------------+-------------------------------------
Reporter: SimonKing | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.2
Component: graph theory | Resolution:
Keywords: immutable | Merged in:
directed graph | Reviewers:
Authors: Simon King | Work issues:
Report Upstream: N/A | Commit:
Branch: public/15810 | d6ca86c1d6984bc7a468b80905ddec01323cc9b6
Dependencies: #15623 | Stopgaps:
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Comment (by SimonKing):
Could you elaborate why you ''remove'' one line in the following chunks,
rather than replace `.directed` by `._directed`?
{{{
#!diff
diff --git a/src/sage/graphs/digraph.py b/src/sage/graphs/digraph.py
index f869bb0..d95e96e 100644
--- a/src/sage/graphs/digraph.py
+++ b/src/sage/graphs/digraph.py
@@ -919,7 +919,6 @@ class DiGraph(GenericGraph):
self._weighted = weighted
self.allow_loops(loops, check=False)
self.allow_multiple_edges(multiedges, check=False)
- self._backend.directed = True
else:
raise NotImplementedError("Supported implementations:
networkx, c_graph.")
diff --git a/src/sage/graphs/graph.py b/src/sage/graphs/graph.py
index a3f1dcd..4d15305 100644
--- a/src/sage/graphs/graph.py
+++ b/src/sage/graphs/graph.py
@@ -1542,7 +1542,6 @@ class Graph(GenericGraph):
self._weighted = weighted
self.allow_loops(loops, check=False)
self.allow_multiple_edges(multiedges, check=False)
- self._backend.directed = False
else:
raise NotImplementedError("Supported implementations:
networkx, c_graph.")
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/15810#comment:38>
Sage <http://www.sagemath.org>
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