#12070: Unavoidable DeprecationWarnings when calling piecewise functions
-------------------------+--------------------------------------------------
Reporter: mjo | Owner: burcin
Type: defect | Status: new
Priority: minor | Milestone: sage-4.8
Component: symbolics | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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When using piecewise functions across modules, you can find yourself
unable to avoid the DeprecationWarning resulting from positional
arguments, e.g. f(0).
A small example:
some_library.py
{{{
from sage.all import *
def make_f():
x = SR.symbol('x', domain='real')
f = piecewise([[(-1,1), x**2]])
return f
}}}
some_script.py
{{{
from some_library import *
my_f = make_f()
my_f(0)
}}}
There is no obvious (or un-obvious, as far as I know) way to avoid the
warning here.
The output, for reference:
{{{
$ sage some_script.py
some_script.py:4: DeprecationWarning: Substitution using function-call
syntax and unnamed arguments is deprecated and will be removed from a
future release of Sage; you can use named arguments instead, like
EXPR(x=..., y=...)
my_f(0)
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12070>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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