[Ironpython-users] SymPy and IronPython 2.7.4

[Andrew Ayre]

Hi,

I was all excited for a moment... until I realized that there are two
projects called SymPy(!).

The one I am trying to use is currently at 0.7.5 and is for symbolic
computation:

http://sympy.org/en/index.html

:(

Andreas - thanks for replying, I appreciate it.

Andy

On 4/7/2014 12:58 PM, Andreas Beham wrote:
> Hi,
> 
> I've not had problems running SimPy samples with IronPython. In fact, I
> copied the MachineShop sample from their page and added it to a Python
> project in VS2013 (you need to have PythonTools for Visual Studio installed
> to do this). I could run that Python project without problems. I also ran
> the model within our own environment in which I integrated IronPython-based
> script execution recently. I could run the model without problems. Of course
> you have to do some imports first:
> import sys
> sys.path.append(r"C:\Program Files (x86)\IronPython 2.7\Lib")
> sys.path.append(r"C:\somepath\simpy-3.0.3")
> 
> Btw, I've also created a .NET port of SimPy, named SimSharp, which you might
> be interested in:
> https://github.com/abeham/SimSharp
> It's not a 1:1 port, but I tried to port the basic concept of using an
> iterator to model a process.
> 
> Sincerely,
> Andreas
> 
> -----Ursprüngliche Nachricht-----
> Von: Ironpython-users
> [mailto:ironpython-users-bounces+andreas.beham=heuristiclab.com at python.org]
> Im Auftrag von Andrew Ayre
> Gesendet: Montag, 07. April 2014 12:03
> An: ironpython-users at python.org
> Betreff: [Ironpython-users] SymPy and IronPython 2.7.4
> 
> Hello,
> 
> I have embedded IronPython 2.7.4 into a .NET 4.0 C# application. I can enter
> and run scripts and I also have an interactive console. It's working great
> and I have no issues... until I tried to use SymPy.
> 
> I've asked for help from the SymPy people but they don't have any experience
> with IronPython.
> 
> I have a subfolder called PythonLib into which I have copied the 2.7
> standard libraries. Importing from these works:
> 
> ========================================================
>>>> import xml.dom
>>>>
> ========================================================
> 
> So I have copied SymPy into PythonLib as well (e.g. I have
> \PythonLib\sympy\__init__.py).
> 
> Here is the first issue:
> 
> ========================================================
>>>> import sympy
> 
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\__init__.py",
> line 32, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy
> \core\__init__.py", line 8, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\expr.py",
> line 7, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\evalf.py",
> line 27, in <module>
>   File
> "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\containers.py",
> line 14, in <module>
>   File
> "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\utilities\__init__.py",
> line 17, in <module>
>   File
> "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\utilities\timeutils.py",
> line 11, in <module>
>   File
> "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\compatibility.py",
> line 110, in u
> TypeError: unicode_escape_decode() takes no arguments (1 given)
> ========================================================
> 
> I can't find any description of what unicode_escape_decode does. It seems to
> be a built-in function? In general SymPy is passing a string to it to be
> decoded so it appears to make sense that the function has an argument.
> 
> I've worked around this with the following:
> 
> ========================================================
>>>> import codecs
>>>> def my_unicode_escape_decode(x):
> ...    return x
> ...
>>>> codecs.unicode_escape_decode = my_unicode_escape_decode
> ========================================================
> 
> Now I get attribute errors. Here is the result of running several imports.
> Can anyone please give me some pointers as to what might be the issue? I'm
> thinking it is something to do with my environment or the way I am embedded
> IronPython. Thanks! Andy
> 
> ========================================================
>>>> import sympy
> 
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\__init__.py",
> line 32, in <module>
>   File
> "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\__init__.py",
> line 8, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\expr.py",
> line 7, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\evalf.py",
> line 9, in <module>
> AttributeError: 'module' object has no attribute 'mpmath'
> 
>>>> import sympy.mpmath.libmp as libmp
> 
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\__init__.py",
> line 34, in <module>
>   File
> "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\assumptions\__init__.py",
> line 2, in <module>
>   File
> "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\assumptions\ask.py",
> line 323, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\cache.py",
> line 93, in wrapper
>   File
> "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\function.py",
> line 185, in __new__
> ImportError: No module named fancysets
> 
>>> >from sympy.sets.fancysets import Naturals0
> 
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\__init__.py",
> line 32, in <module>
>   File
> "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\__init__.py",
> line 8, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\expr.py",
> line 7, in <module>
>   File "C:\Users\Andy\Documents\ADScript\PythonLib\sympy\core\evalf.py",
> line 9, in <module>
> AttributeError: 'module' object has no attribute 'mpmath'
> 
> 
>>>> sys.path
> 
> ['.', 'C:\\Users\\Andy\\Documents\\ADScript\\bin\\Debug\\Lib',
> 'C:\\Users\\Andy\\Documents\\ADScript\\bin\\Debug\\DLLs',
> 'C:\\Users\\Andy\\Documents\\ADScript\\bin\\Debug\\PythonLib',
> '../../PythonLib']
> ========================================================
> 
> --
> Andy
> PGP Key ID: 0xDC1B5864
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> 

-- 
Andy
PGP Key ID: 0xDC1B5864