#6854: Tab completion for elements of InfinitePolynomialRing
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Reporter: ncohen | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-4.3
Component: commutative algebra | Keywords: tab completion,
InfinitePolynomialRing
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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Changes (by SimonKing):
* keywords: => tab completion, InfinitePolynomialRing
* type: defect => enhancement
* component: misc => commutative algebra
Comment:
Hi Nathann!
Firstly, as was mentioned by Burcin, you mixed two completely different
things, namely symbolics and commutative algebra. InfinitePolynomialRing
is about the latter. It isn't "misc" either, so, I am changing the
component again.
Concerning {{{e<3}}} returning {{{True}}}: This is clearly intentional and
most certainly not a bug. It is essential to have polynomial rings
ordered, if one wants to compute Gröbner bases -- and this is what
InfinitePolynomialRing is about.
Therefore I changed the Summary of the ticket (which was too unspecific
anyway).
Concerning TAB completion: It is correct that the custom {{{__getattr__}}}
is to blame.
But I just learned something. Namely, if a class has a method
{{{_getAttributeNames}}} that returns a list of strings, then these are
used to do auto completion. Apparently methods {{{__members__}}},
{{{__methods__}}} and {{{trait_names}}} also play a role, but I don't know
which.
A possible solution is to implement {{{_getAttributeNames}}} so that it
returns {{{dir(underlying polynomial)}}}. I just tested: TAB-completion
will then show ''both'' the genuine attributes of InfinitePolynomials
''and'' the attributes inherited from usual polynomials.
But I don't think that this is a bug. So, I change the ticket type into
"enhancement", and also added key words.
I will implement it (after dinner...) and post a patch.
Cheers,
Simon
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6854#comment:4>
Sage <http://www.sagemath.org>
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