#17958: implement declare_var, deprecate (None)var
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Reporter: rws | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.6
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by mmezzarobba):
Replying to [comment:20 jhpalmieri]:
> Remember that defining a new mathematical variable might be the first
thing that a new Sage user will want to do, so from a UI point of view,
`_.<x> = SR()` is a disaster. It looks like a meaningless string of
symbols. `var('x')` or `declare_var('x')` or `symbol('x')` or similar at
least have a chance to indicate some meaning when someone glances at the
code/worksheet/notebook.
Well, then, form that point of view, I find `x = SR.var('x')` much better.
It clarifies in particular (i) that you are assigning an object to a
certain Python variable, and (ii) that the indeterminate you are creating
belongs to a particular parent--often not the one you want if you are
using sage in the first place!
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Ticket URL: <http://trac.sagemath.org/ticket/17958#comment:21>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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