[Python.NET] Problem passing parameters to a python function from C#

[Tiago Matias]

Hi all!

I'm trying to invoke a python function from a .NET application. The C# code
is this:

string templateFile = "Simple.tpl";
 PythonEngine.Initialize();

PyObject module = PythonEngine.ImportModule("Engine");
PyObject method = module.GetAttr("FillTemplate");
PyObject result = method.Invoke(PyObject.FromManagedObject(templateFile));

Console.WriteLine(result.ToString());

and the python module is simply:

from Cheetah.Template import Template

def FillTemplate(templateName):
        template = Template(file=templateName)

        return template


Now, the problem is the parameter. If I hardcode "Simple.tpl" in the
constructor everything works as expected. Also, if I change the python code
to "return templateName" I get "Simple.tpl" back in the C# code.

But, if I run the code above a PythonException is thrown....I've also tried
to place a try...except block around the code but it didn't caught any
exception... I suspect that I must be calling the PyObject.Invoke() function
with the wrong arguments...

Essentially the purpose of this is to generate C# code with the help of
cheetah templates. The ideia is to construct an object containing the
metadata and then pass it to cheetah to generate code.

But I can't seem to be able to pass a simple string!

Any help would be grealty appreciated! Btw, bear in mind that this is my
first attempt with python... so the question maybe stupid ;)


Thanks in advance!

Tiago
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