id summary reporter owner description type status priority milestone component resolution keywords cc merged author reviewer upstream work_issues branch commit dependencies stopgaps
17558 pickled function loses its args wonder "The pickle process appears to forget whether an expression is a function.
{{{
sage: var('u_0 u_1')
(u_0, u_1)
sage: f2u = (1 - u_0).function(u_0, u_1)
sage: f2u(x,y)
-x + 1
sage: f2 = loads(dumps(f2u))
sage: f2(x,y)
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
/usr/local/src/jekyll-research/wmd_files/Selection_Gradients/maclev-2-2-adap.sage.py in ()
----> 1 f2(x,y)
/usr/local/sage/local/lib/python2.7/site-packages/sage/symbolic/expression.so in sage.symbolic.expression.Expression.__call__ (build/cythonized/sage/symbolic/expression.cpp:24669)()
/usr/local/sage/local/lib/python2.7/site-packages/sage/symbolic/ring.so in sage.symbolic.ring.SymbolicRing._call_element_ (build/cythonized/sage/symbolic/ring.cpp:8970)()
ValueError: the number of arguments must be less than or equal to 1
sage: f2u
(u_0, u_1) |--> -u_0 + 1
sage: f2
-u_0 + 1
}}}
Since I'm using a modular program design with intermediate results in .sobj files, this (along with some other bugs I've reported) is making it inconvenient for me to work with functions...
" defect new major sage-6.4 pickling N/A