#4100: [with patch, needs work] comparison with None extraordinarily slow
------------------------------+---------------------------------------------
 Reporter:  robertwb          |        Owner:  somebody  
     Type:  defect            |       Status:  new       
 Priority:  major             |    Milestone:  sage-3.1.3
Component:  basic arithmetic  |   Resolution:            
 Keywords:                    |  
------------------------------+---------------------------------------------
Changes (by mabshoff):

  * summary:  [with patch, with positive review] comparison with None
              extraordinarily slow => [with patch, needs
              work] comparison with None extraordinarily slow

Comment:

 This patch causes a doctest failure in gen.pyx:
 {{{
 [EMAIL PROTECTED]:/scratch/mabshoff/release-cycle/sage-3.1.3.alpha0$ ./sage -t
 -long devel/sage/sage/libs/pari/gen.pyx
 sage -t -long devel/sage/sage/libs/pari/gen.pyx
 **********************************************************************
 File "/scratch/mabshoff/release-cycle/sage-3.1.3.alpha0/tmp/gen.py", line
 689:
     sage: pari(2.5) > None
 Expected:
     False
 Got:
     True
 **********************************************************************
 1 items had failures:
    1 of  16 in __main__.example_11
 ***Test Failed*** 1 failures.
 For whitespace errors, see the file /scratch/mabshoff/release-
 cycle/sage-3.1.3.alpha0/tmp/.doctest_gen.py
          [56.1 s]
 }}}

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4100#comment:3>
SAGE <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of 
Reinventing the Wheel
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