#11324: Bug in gale_ryser_theorem
------------------------------+---------------------------------------------
Reporter: ncohen | Owner: wdj
Type: defect | Status: new
Priority: major | Milestone: sage-4.7.1
Component: combinatorics | Resolution:
Keywords: | Work_issues:
Upstream: N/A | Reviewer: Nathann Cohen
Author: David Joyner | Merged:
Dependencies: |
------------------------------+---------------------------------------------
Changes (by jdemeyer):
* status: closed => new
* resolution: fixed =>
* merged: sage-4.7.1.alpha3 =>
Comment:
The description says "Here is a patch implementing a new doctest checking
for correction, but so far the ryser method still needs to be fixed !".
Is this up-to-date? If yes, why adding a doctest for a broken method?
In any case, this needs work. On a Mac OS X 10.4 PPC system, I can easily
reproduce the following:
{{{
sage -t -long -force_lib "devel/sage/sage/combinat/integer_vector.py"
**********************************************************************
File
"/Users/jdemeyer/sage-4.7.1.alpha3/devel/sage/sage/combinat/integer_vector.py",
line 340:
sage: for algorithm in ["gale", "ryser"]: #
long time
for i in range(Integer(50)):
# long time
if not test_algorithm(algorithm, Integer(3), Integer(10)):
# long time
print "Something wrong with algorithm ", algorithm #
long time
break #
long time
Exception raised:
Traceback (most recent call last):
File "/Users/jdemeyer/sage-4.7.1.alpha3/local/bin/ncadoctest.py",
line 1231, in run_one_test
self.run_one_example(test, example, filename, compileflags)
File "/Users/jdemeyer/sage-4.7.1.alpha3/local/bin/sagedoctest.py",
line 38, in run_one_example
OrigDocTestRunner.run_one_example(self, test, example, filename,
compileflags)
File "/Users/jdemeyer/sage-4.7.1.alpha3/local/bin/ncadoctest.py",
line 1172, in run_one_example
compileflags, 1) in test.globs
File "<doctest __main__.example_3[28]>", line 3, in <module>
if not test_algorithm(algorithm, Integer(3), Integer(10)):
# long time
File "<doctest __main__.example_3[27]>", line 7, in test_algorithm
ss1 = sorted(map(lambda x : sum(x) , m.rows()), reverse = True)
AttributeError: 'bool' object has no attribute 'rows'
**********************************************************************
}}}
The error does not show up every time, but let's say 1 time of out 5
tests.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11324#comment:15>
Sage <http://www.sagemath.org>
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