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[Octave-bug-tracker] [bug #45643] symbolic pkg function_handle rhs probl
From: |
Doug Stewart |
Subject: |
[Octave-bug-tracker] [bug #45643] symbolic pkg function_handle rhs problems |
Date: |
Tue, 28 Jul 2015 13:44:27 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.89 Safari/537.36 |
URL:
<http://savannah.gnu.org/bugs/?45643>
Summary: symbolic pkg function_handle rhs problems
Project: GNU Octave
Submitted by: dastew
Submitted on: Tue 28 Jul 2015 13:44:27 GMT
Category: Octave Forge Package
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Incorrect Result
Status: None
Assigned to: None
Originator Name: Doug Stewart
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 4.0.0
Operating System: Any
_______________________________________________________
Details:
When the rhs is a constant, as in this example,
then the function_handle code does not know what to do.
>> syms y(x)
>> f=y==1
f = (sym) y(x) = 1
>> ff=function_handle(rhs(f))
Traceback (most recent call last):
File "<stdin>", line 18, in <module>
File "<stdin>", line 13, in _fcn
File "/usr/local/lib/python2.7/dist-packages/sympy/matrices/matrices.py",
line 1145, in free_symbols
PYTHON: Error in cmd
Resetting the octsympy communication mechanism
Closing the Python pipe...
return set.union(*[i.free_symbols for i in self])
TypeError: descriptor 'union' of 'set' object needs an argument
error: python_cmd: unexpected return
error: called from
python_cmd at line 143 column 6
findsymbols at line 77 column 7
symvar at line 80 column 11
findsym at line 45 column 5
codegen>codegen_input_parser at line 207 column 14
codegen at line 24 column 35
function_handle at line 87 column 12
>>
_______________________________________________________
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