#4232: #249 causes bug in importing large lists
------------------------------+---------------------------------------------
Reporter: jason | Owner: somebody
Type: defect | Status: new
Priority: blocker | Milestone: sage-3.1.3
Component: basic arithmetic | Keywords:
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Try the following in a sage that contains the patch at #249
{{{
a=[(i,randint(0,100)) for i in range(3000)]
f=open("mytest.sage",'w')
f.write("a=[\n")
f.writelines(["%s,\n"%str(i) for i in a])
f.write("(0,0)]")
f.close()
load mytest.sage
}}}
Without the patch at #249, the load completes in about a second. With the
patch, I get recursion errors, ending in:
{{{
/home/jason/download/sage-3.1.3.alpha1/local/lib/python2.5/site-
packages/sage/misc/preparser.py in preparse(line, reset, do_time,
ignore_prompts)
811
812
--> 813
814
815
/home/jason/download/sage-3.1.3.alpha1/local/lib/python2.5/site-
packages/sage/misc/preparser.py in preparse(line, reset, do_time,
ignore_prompts)
811
812
--> 813
814
815
/home/jason/download/sage-3.1.3.alpha1/local/lib/python2.5/site-
packages/sage/misc/preparser.py in preparse(line, reset, do_time,
ignore_prompts)
811
812
--> 813
814
815
/home/jason/download/sage-3.1.3.alpha1/local/lib/python2.5/site-
packages/sage/misc/preparser.py in preparse(line, reset, do_time,
ignore_prompts)
678
679
--> 680
681
682
/home/jason/download/sage-3.1.3.alpha1/local/lib/python2.5/site-
packages/sage/misc/preparser.py in strip_string_literals(code)
267
268
--> 269
270
271
RuntimeError: maximum recursion depth exceeded in cmp
}}}
One solution is to revert the patch at #249. Of course, the better is to
find the bug and fix it :).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4232>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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