#10963: More functorial constructions
-------------------------------------+-------------------------------------
       Reporter:  nthiery            |        Owner:  stumpc5
           Type:  enhancement        |       Status:  needs_work
       Priority:  major              |    Milestone:  sage-6.1
      Component:  categories         |   Resolution:
       Keywords:  days54             |    Merged in:
        Authors:  Nicolas M. Thiéry  |    Reviewers:  Simon King, Frédéric
Report Upstream:  N/A                |  Chapoton
         Branch:                     |  Work issues:  Detect and fix
  public/ticket/10963                |  Heisenbugs
   Dependencies:  #11224, #8327,     |       Commit:
  #10193, #12895, #14516, #14722,    |  5ccf253b17c151d8e773037ac634a64f84f03075
  #13589, #14471, #15069, #15094,    |     Stopgaps:
  #11688, #13394, #15150, #15506     |
-------------------------------------+-------------------------------------

Comment (by SimonKing):

 AFAIK, #15506 contains all fixes to the "recursion depth exceeded" problem
 that Nils came up with.

 Interestingly, in one of the errors, the "recursion depth exceeded"
 combines weak value dictionary and triple dict:
 {{{
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.misc.weak_dict.WeakValueDictEraser
 object at 0xb668971c> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.structure.coerce_dict.TripleDictEraser
 object at 0x9b06554> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.structure.coerce_dict.TripleDictEraser
 object at 0x9b06554> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.structure.coerce_dict.TripleDictEraser
 object at 0x9b064ac> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.structure.coerce_dict.TripleDictEraser
 object at 0x9b064ac> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.structure.coerce_dict.MonoDictEraser
 object at 0x9cdc77c> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.structure.coerce_dict.TripleDictEraser
 object at 0x9b06554> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.structure.coerce_dict.TripleDictEraser
 object at 0x9b06554> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.misc.weak_dict.WeakValueDictEraser
 object at 0xa6b814c> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.structure.coerce_dict.TripleDictEraser
 object at 0x9b064ac> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.structure.coerce_dict.TripleDictEraser
 object at 0x9b064ac> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.misc.weak_dict.WeakValueDictEraser
 object at 0xb668971c> ignored
     Exception RuntimeError: 'maximum recursion depth exceeded while
 calling a Python object' in <sage.misc.weak_dict.WeakValueDictEraser
 object at 0xb6689584> ignored
 }}}

--
Ticket URL: <http://trac.sagemath.org/ticket/10963#comment:238>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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