#18026: Parent breakage because not every SageObject is idempotent
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       Reporter:  vbraun    |        Owner:
           Type:  defect    |       Status:  new
       Priority:  major     |    Milestone:  sage-6.6
      Component:  pickling  |   Resolution:
       Keywords:            |    Merged in:
        Authors:            |    Reviewers:
Report Upstream:  N/A       |  Work issues:
         Branch:            |       Commit:
   Dependencies:            |     Stopgaps:
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Comment (by vbraun):

 I'm leaning towards not making `parent` a method of `SageObject`. Move it
 to `Element`. Not everything fits into the parent/element scheme. Parents
 probably don't need a parent class either:
 {{{
 sage: ZZ.parent()
 <type 'sage.rings.integer_ring.IntegerRing_class'>
 }}}

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Ticket URL: <http://trac.sagemath.org/ticket/18026#comment:2>
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