python is written in pure C/C++. The point is to integrate C# codes in python.net. do go thru the list and u will be able to find ur answer. T On Sat, Mar 26, 2011 at 1:44 AM, Guillaume Pichard <kyomster@googlemail.com>wrote:

Hello,

I am trying to use pytables with python.net. It is working great with python alone. What I am doing with python.net is: PythonEngine.Initialize(); PythonEngine.AcquireLock();

PyObject sys = PythonEngine.ImportModule("sys"); PyObject path = sys.GetAttr("path"); PyObject append = path.GetAttr("append"); PyObject[] a = new PyObject[1]; a[0] = new PyString("C:\\Python27\\Lib\\site-packages"); append.Invoke(a);

PyObject pyTables = PythonEngine.ImportModule("tables"); if (pyTables == null) throw new PythonException();

The exception message is "ImportError : DLL load failed: Specified module not found."

What could be the differences between python.net and python ? Is there any specific path to add ?

Thanks a lot, Guillaume.

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-- Tanmoy Mukherjee

Being a novice embedder (especially back when I wrote the pyimport.cs module in the Python.EmbeddingTest project), I chose to do things a little differently: At the time, I felt like I wanted access to the entire engine. I still can't decide if calling methods on PyObject is more clumsy than the object[] arg passing arrangement with strongly typed object or not. [SetUp] public void SetUp() { PythonEngine.Initialize(); gs = PythonEngine.AcquireLock(); //string here = Environment.CurrentDirectory; // trunk\pythonnet\src\embed_tests\bin\Debug /* * Append the tests directory to sys.path * using reflection to circumvent the private modifiers placed on most Runtime methods. */ string s = @"..\..\..\tests"; Type RTClass = typeof(Runtime.Runtime); /* pyStrPtr = PyString_FromString(s); */ MethodInfo PyString_FromString = RTClass.GetMethod("PyString_FromString", BindingFlags.NonPublic | BindingFlags.Static); object[] funcArgs = new object[1]; funcArgs[0] = s; IntPtr pyStrPtr = (IntPtr)PyString_FromString.Invoke(null, funcArgs); /* SysDotPath = sys.path */ MethodInfo PySys_GetObject = RTClass.GetMethod("PySys_GetObject", BindingFlags.NonPublic | BindingFlags.Static); funcArgs[0] = "path"; IntPtr SysDotPath = (IntPtr)PySys_GetObject.Invoke(null, funcArgs); /* SysDotPath.append(*pyStrPtr) */ MethodInfo PyList_Append = RTClass.GetMethod("PyList_Append", BindingFlags.NonPublic | BindingFlags.Static); funcArgs = new object[2]; funcArgs[0] = SysDotPath; funcArgs[1] = pyStrPtr; int r = (int)PyList_Append.Invoke(null, funcArgs); } [TearDown] public void TearDown() { PythonEngine.ReleaseLock(gs); PythonEngine.Shutdown(); } [Test] public void TestDottedName() { PyObject module; module = PythonEngine.ImportModule("PyImportTest.test.one"); Assert.IsNotNull(module, ">>> import PyImportTest.test.one # FAILED"); } Personally, I don't see the benefit of marking most of the Runtime as private. On 03/25/2011 01:14 PM, Guillaume Pichard wrote:

Hello,

I am trying to use pytables with python.net <http://python.net>. It is working great with python alone. What I am doing with python.net <http://python.net> is: PythonEngine.Initialize(); PythonEngine.AcquireLock();

PyObject sys = PythonEngine.ImportModule("sys"); PyObject path = sys.GetAttr("path"); PyObject append = path.GetAttr("append"); PyObject[] a = new PyObject[1]; a[0] = new PyString("C:\\Python27\\Lib\\site-packages"); append.Invoke(a);

PyObject pyTables = PythonEngine.ImportModule("tables"); if (pyTables == null) throw new PythonException();

The exception message is "ImportError : DLL load failed: Specified module not found."

What could be the differences between python.net <http://python.net> and python ? Is there any specific path to add ?

Thanks a lot, Guillaume.

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