#4278: [with patch, needs review] Old parent's don't correctly handle coerce 
maps
from Python's native types.
----------------------+-----------------------------------------------------
 Reporter:  mhansen   |       Owner:  robertwb  
     Type:  defect    |      Status:  new       
 Priority:  major     |   Milestone:  sage-3.1.3
Component:  coercion  |    Keywords:            
----------------------+-----------------------------------------------------
 Before

 {{{
 sage: QQ['q,t'].coerce_map_from(int)
 sage:
 }}}

 After

 {{{
 Composite map:
   From: Set of Python objects of type 'int'
   To:   Multivariate Polynomial Ring in q, t over Rational Field
   Defn:   Native morphism:
           From: Set of Python objects of type 'int'
           To:   Integer Ring
         then
           Call morphism:
           From: Integer Ring
           To:   Multivariate Polynomial Ring in q, t over Rational Field
 }}}

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4278>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of 
Reinventing the Wheel
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