#20743: Parent.list() should return an immutable tuple
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       Reporter:  jsrn               |        Owner:
           Type:  defect             |       Status:  new
       Priority:  major              |    Milestone:  sage-7.3
      Component:  categories         |   Resolution:
       Keywords:  parent, immutable  |    Merged in:
        Authors:                     |    Reviewers:
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
   Dependencies:                     |     Stopgaps:
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Comment (by kedlaya):

 -1 to returning a tuple. `foo.list()` should return the same as
 `list(foo)`, which is always a list, and `foo.tuple()` should return the
 same as `tuple(foo)`, which is always a tuple. And for that matter,
 `foo.str()` returns the same as `str(foo)` which is always a string, et
 cetera.

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Ticket URL: <http://trac.sagemath.org/ticket/20743#comment:2>
Sage <http://www.sagemath.org>
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