#7705: graphs: replace the worldmap sobj by some code (or something else that is
transparent)
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Reporter: was | Owner: rlm
Type: defect | Status: new
Priority: major | Milestone: sage-4.3.1
Component: graph theory | Keywords:
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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Description changed by was:
Old description:
> This command in sage-4.3 returns a loaded sobj:
> {{{
> sage: graphs.WorldMap()
> Graph on 251 vertices
> }}}
New description:
This command in sage-4.3 returns a loaded sobj:
{{{
sage: graphs.WorldMap()
Graph on 251 vertices
}}}
The Sage source distribution must ship with a bare minimum of opaque
potentially dangerous binary files. Pickles (i.e. sobjs) are fairly
opaque binary files that can invoke arbitrary code when being unpickled.
Also, sobj's have the drawback that they can someday break, and can be
very hard to update later (the map of the world will change periodically).
There are currently three places in the Sage source code that includes
pickles:
* the pickle jar,
* the database of lattice polytopes
* the above world map graph.
Please replace the world map sobj by something else, e.g., some code that
creates the world map when the user first asks for it.
--
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7705#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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