#10327: Problems with get_systems and symbolic expressions
-----------------------------------+----------------------------------------
Reporter: jpflori | Owner: burcin
Type: defect | Status: positive_review
Priority: minor | Milestone: sage-4.7
Component: symbolics | Keywords:
Work_issues: | Upstream: N/A
Reviewer: Karl-Dieter Crisman | Author: Mike Hansen
Merged: | Dependencies:
-----------------------------------+----------------------------------------
Changes (by kcrisman):
* status: needs_review => positive_review
* reviewer: => Karl-Dieter Crisman
Comment:
I finally figured out ''why'' it works. For my own reference, or others
who might have been similarly confused by this important but arcane
subject. In some sense we're lucky that JP happened upon 'a', as many
others weren't in this!
{{{
sage: get_systems('print locals()')
{'a': None, 'bad_res': None, 'systems_used': None, 'stats': None,
'bad_re': None, 'i': None, 'cmd': 'print locals()', 'system': None,
'filename': '/Users/karl-
dietercrisman/.sage//temp/new_host_2.home/60265//tmp_2', 're': <module
're' from '/Applications/MathApps/sage/local/lib/python/re.pyc'>, 's':
None, 'r': None, 'cProfile': <module 'cProfile' from
'/Applications/MathApps/sage/local/lib/python/cProfile.pyc'>, 'pstats':
<module 'pstats' from
'/Applications/MathApps/sage/local/lib/python/pstats.pyc'>, 'strings':
None}
[]
}}}
Yes, we wouldn't want to use these particular locals to `exec` the
command.
And work the patch does, in a fair number of cases (using quite a few of
the systems) I still tested. Good catch.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10327#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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