#807: construction of function fields
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Reporter: nbruin | Owner: somebody
Type: defect | Status: new
Priority: major | Milestone: sage-5.8
Component: basic arithmetic | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by tscrim):
I think the underlying problem is that the language syntax does not truly
support doing `QQ[]`, so when it is trying to parse
`QQ[].fraction_field()`, it first must evaluate `QQ[]` as a standalone
(thus the `SyntaxError`), in order to get the output object to find the
attribute `fraction_field()`.
I don't know where/how the syntax `P.<x> = QQ[]` comes from/works (in the
preparser perhaps?), so perhaps we can use that, but I don't know if that
is easily done, safe, or even feasible. I'll do some looking around, but
I'm thinking this might not be doable considering the semantics of
python... Anyone else's thoughts?
Best,[[BR]]
Travis
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/807#comment:6>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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