#11116: Pynac module not initialized before being used. This causes a crash on
64-bit OpenSolaris.
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Reporter: drkirkby | Owner: drkirkby
Type: defect | Status: new
Priority: major | Milestone: sage-4.7.1
Component: solaris | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by burcin):
The solution to this would be to import one of the objects mentioned in
the chain I described lazily:
It seems that cones.py looks for posets.py, which needs the graphs
module, which initializes the graph_editor. The graph editor tries to see
if it's in the notebook or the command line, but sagenb imports SR and
Expression from sage.symbolic.all (line 563 of sagenb/misc/support.py).
This tries to initialize the functions (integrate in this case) before
pynac is initialized...
This can be done by
* putting the import statement closer to the place where the object is
needed in the source as opposed to the top of the file, or
* using Robert's LazyImport
Note that quite a while ago, I wrote a script (`sage-test-import` in
`local/bin`) to test for these problems. It imports each module in the
Sage library individually, and checks if we got any errors. It would be a
significant achievement if we can get a release to pass this test. This
would go a long way towards making Sage more modular.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11116#comment:14>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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