#10963: More functorial constructions
-------------------------------------+-------------------------------------
Reporter: nthiery | Owner: stumpc5
Type: enhancement | Status: needs_work
Priority: major | Milestone:
Component: categories | Resolution:
Keywords: | Merged in:
Authors: Nicolas M. Thiéry | Reviewers: Simon King
Report Upstream: N/A | Work issues: Reduce startup time
Branch: | by 5%. Avoid "recursion depth
Dependencies: #11224, #8327, | exceeded (ignored)".
#10193, #12895, #14516, #14722, | Commit:
#13589, #14471 | Stopgaps:
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Comment (by nthiery):
Hi Simon,
I am investigating the recursion error. It is definitely caused by the
weak reference handling.
If you run
{{{
sage -tp 8 bla.py bla.py
}}}
with the attached extract of pushout.py, you get a bunch of error messages
like:
{{{
Exception RuntimeError: 'maximum recursion depth exceeded while
calling a Python object' in <sage.structure.coerce_dict.TripleDictEraser
object at 0x347af68> ignored
}}}
And if you comment out the "del" line in TripleDictEraser.__call__, then
the error message disapears.
I am know going to proceed reducing further bla.py to get something that
hopefuly would trigger the bug without the functorial construction patch.
The hard part is that basically removing any line in bla.py gets the error
not to appear.
Let me know if you have ideas ...
--
Ticket URL: <http://trac.sagemath.org/ticket/10963#comment:90>
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