On Fri, Nov 27, 2009 at 10:18 AM, Florent Hivert
<florent.hiv...@univ-rouen.fr> wrote:
> Hi Jason !
>
>> The patch is already done and waiting on trac for several months:
>>
>> http://trac.sagemath.org/sage_trac/ticket/1918
>
> Excellent !
>
>> You just have to update a bunch of doctests and review the patch!
>
> I was ready to do that, unfortunately, that not the problem here. There seems
> to be some interference with the doctest mechanism:
>
> If you take a random test file, you'll see that the answer that is expected by
> sage is printed on the screen before sage reports the error and that sage
> reports that he get nothing. So it seems that the result of the patch is that
> the doctest mechanism is bypassed and that the output goes directly to the
> screen. I'll investigate this but I don't know anything neither about sage
> output
> mechanism not on sage doctest mechanism. So if anyone have a idea, please
> help.
>
It might be worth playing around with this code at the bottom of the patch:
181 @classmethod
182 def install(cls):
183 """
184 Install a new displayhook, so that subsequent output
from the interpreter
185 will be processed by this class.
186 """
187 # First, try to install the hook using the IPython hook
API.
188 ipapi = IPython.ipapi.get()
189 if ipapi:
190 # IPython's default result_display() uses the
191 # IPython.genutils.Term.cout stream.
192 dh = cls(IPython.genutils.Term.cout)
193 ipapi.set_hook('result_display', dh.result_display)
194 else:
195 # In certain modes where IPython is not in use, it
is necessary to
196 # fall back to setting Python's sys.displayhook.
197 dh = cls(sys.stdout)
198 sys.displayhook = dh.displayhook
Force one or other of the cases in that if statement.
I don't have time to work on this right now.
> Cheers,
>
> Florent
>
>
> sage -t "devel/sage-combinat/sage/combinat/subword.py"
> Subwords of ['a', 'b', 'c']
> **********************************************************************
> File "/usr/local/sage/sage-4.2/devel/sage-combinat/sage/combinat/subword.py",
> line 66:
> sage: S = Subwords(['a','b','c']); S
> Expected:
> Subwords of ['a', 'b', 'c']
> Got nothing
> []
> **********************************************************************
> File "/usr/local/sage/sage-4.2/devel/sage-combinat/sage/combinat/subword.py",
> line 68:
> sage: S.first()
> Expected:
> []
> Got nothing
> ['a', 'b', 'c']
> **********************************************************************
> File "/usr/local/sage/sage-4.2/devel/sage-combinat/sage/combinat/subword.py",
> line 70:
> sage: S.last()
> Expected:
> ['a', 'b', 'c']
> Got nothing
> [[], ['a'], ['b'], ['c'], ['a', 'b'], ['a', 'c'], ['b', 'c'], ['a', 'b', 'c']]
> **********************************************************************
> File "/usr/local/sage/sage-4.2/devel/sage-combinat/sage/combinat/subword.py",
> line 72:
> sage: S.list()
> Expected:
> [[], ['a'], ['b'], ['c'], ['a', 'b'], ['a', 'c'], ['b', 'c'], ['a', 'b',
> 'c']]
> Got nothing
> Subwords of ['a', 'b', 'c'] of length 2
> **********************************************************************
> File "/usr/local/sage/sage-4.2/devel/sage-combinat/sage/combinat/subword.py",
> line 77:
> sage: S = Subwords(['a','b','c'], 2); S
> Expected:
> Subwords of ['a', 'b', 'c'] of length 2
> Got nothing
> [['a', 'b'], ['a', 'c'], ['b', 'c']]
>
> --
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--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
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