#11931: Fix all element classes should take the parent as first mandatory 
argument.
--------------------------+-------------------------------------------------
   Reporter:  nthiery     |          Owner:  nthiery   
       Type:  defect      |         Status:  new       
   Priority:  major       |      Milestone:  sage-4.7.3
  Component:  categories  |       Keywords:            
Work_issues:              |       Upstream:  N/A       
   Reviewer:              |         Author:            
     Merged:              |   Dependencies:            
--------------------------+-------------------------------------------------
 Taken from Sets.ParentMethods._element_constructor_from_element_class:

 {{{
             Caveat: ``self`` is passed to the constructor of the
             element class as a keyword argument ``parent``. Many
             element classes in Sage, in particular those implemented
             by mean of extension types, take ``parent`` as first
             mandatory argument instead.

             This incompatibility will be fixed soon (Fall 2009?) by
             having all element classes take ``parent`` as first
             mandatory argument, and updating this default
             implementation of :meth:`_element_constructor_`.
 }}}

 Fall 2009 is long over ...

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11931>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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