ValueError when executing rsolve's example in SymPy Live

[vadimcn]

1. Go to the 'solvers' section of sympy documentation: http://docs.sympy.org/0.7.2-py3k/modules/solvers/solvers.html 2. Execute in SymPy Live the first three blocks of rsolve() example, which results in this error:

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Python console for SymPy 0.7.2 (Python 2.5.2) These commands were executed: 
>>> from __future__ import division 
>>> from sympy import * 
>>> x, y, z, t = symbols('x y z t') 
>>> k, m, n = symbols('k m n', integer=True) 
>>> f, g, h = symbols('f g h', cls=Function)

>>> from sympy import Function, rsolve
>>> from sympy.abc import n
>>> y = Function('y')
>>> rsolve(f, y(n))
Traceback (most recent call last): File "<string>", line 1, in <module> File "/base/data/home/apps/s~sympy-live-hrd/34.364711976382463821/sympy/sympy/solvers/recurr.py", line 682, in rsolve raise ValueError("'%s' expected, got '%s'" % (y.func, h.func)) ValueError: 'y' expected, got '<property object at 0xb9fc860bf695ba0>' 

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Interestingly, that same code works just fine when executed as Python script.

Original issue for #6775: http://code.google.com/p/sympy/issues/detail?id=3676
Original author: https://code.google.com/u/102799512789490801892/

[asmeurer]

This is most likely the function pickling issue.

**Labels:** Live  

Original comment: http://code.google.com/p/sympy/issues/detail?id=3676#c1
Original author: https://code.google.com/u/asmeurer@gmail.com/

[asmeurer]

Also, this probably won't ever matter, but note that SymPy live always runs python 2, even if you are in the python 3 docs.

Original comment: http://code.google.com/p/sympy/issues/detail?id=3676#c2
Original author: https://code.google.com/u/asmeurer@gmail.com/

[asmeurer]

See issue 5699 , which is essentially issue 4297 .

**Status:** Duplicate  
**Mergedinto:** 2600  

Referenced issues: #4297, #5699
Original comment: http://code.google.com/p/sympy/issues/detail?id=3676#c3
Original author: https://code.google.com/u/asmeurer@gmail.com/