Mailman 3 March 2018 - Python.NET

Creating an Installer for C# Apps that use Python.Runtime
by Andrew Yang 20 Mar '18

20 Mar '18

Hi All, This might be a really dumb question, but I was wondering how can I create an installer for a C# wpf app, that uses pythonnet's Python.Runtime.dll? Currently, I've created a python module, imported the module in "using (Py.GIL())", and called some functions I've written. What methods are there to allow a user who does not have Python installed to be able to install and use my app (with or without having to install python)? I'm not sure if this is relevant, but I'm only importing from modules I've written or __builtin__ in the module used in my C# app. Additionally, is the Python.Runtime.dll that I build on my machine compatible with my users'? Best regards,Andrew

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Indexer not working on Interop
by Phat Loc 19 Mar '18

19 Mar '18

Hi All, I was expecting the code below to work. Basically I casting a System.__ComObject into a Range Interface ( https://msdn.microsoft.com/en-us/library/microsoft.office.interop.excel.ran…). There should be an indexer but I can't seem to get it to work? Thanks, Phat from PyExcel import PyAddin import Microsoft.Office.Interop.Excel as Excel app = Excel._Application(PyAddin.CurrentInstance.ExcelApp) selection = Excel.Range(app.Selection) In [5]: selection[1,1] --------------------------------------------------------------------------- TypeError Traceback (most recent call last) <ipython-input-5-bb1b652c6740> in <module>() ----> 1 selection[1,1] TypeError: 'Range' object is not subscriptable In [6]: selection.Cells[1,1] --------------------------------------------------------------------------- TypeError Traceback (most recent call last) <ipython-input-6-f8b14ac4d116> in <module>() ----> 1 selection.Cells[1,1] TypeError: unindexable object In [7]: selection.Cells(1,1) --------------------------------------------------------------------------- TypeError Traceback (most recent call last) <ipython-input-7-e8b900b98026> in <module>() ----> 1 selection.Cells(1,1) TypeError: object is not callable

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Runtime Callable Wrapper Interop
by Phat Loc 19 Mar '18

19 Mar '18

Hi All, I want to be able to use the Runtime Callable Wrapper for the Excel application as I would in the CLR from C#. Maybe I am missing something because it does work partially. If I get reference to Runtime Callable Wrapper for an Excel Application COM object then I can call its methods and properties like a normal clr object. However if one of the property is another COM object e.g. ExcelApp.Cells then it would need to a marshal.createwrapperoftype for that. How would I get it to work like comtypes (http://pythonhosted.org/comtypes/) but using the CLR wrapper instead of COM directly? Do I need to modify the python runtime in order to handle this use case or is there an easier way? Thanks, Phat

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Calling Python script from dotnet
by techi eth 19 Mar '18

19 Mar '18

Hi, How i can use calling python script from dotnet by using pythondotnet framwork ? I would like to pass some dotnet Object to python script & take return of dotnet object one script execution is over to dotnet code. Thanks

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Python.Runtime.dll Embedded Resource & AssemblyLoader
by Phat Loc 19 Mar '18

19 Mar '18

Hi All, I am embedding Python in a clr application. Do I need to include Python.Runtime.dll as an Embedded Resource? If so why? It does seem to work with just a reference to the Python.Runtime Assembly. Also do I also need to create an AssemblyLoader like the one in the Console application in the pythonnet solution? Thanks, Phat

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Pythondotnet release for Mono
by techi eth 17 Mar '18

17 Mar '18

Hi, I would like to know which is python for dot net release will build & works with mono. I am trying with Mono4.0.0 on Ubuntu14.04 but getting building error. Any link with right version or right build steps will be helpful. Thanks

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Embedding Python Question
by Phat Loc 17 Mar '18

17 Mar '18

Hi All, I get a bunch of Exception thrown: 'System.IO.FileLoadException' in mscorlib.dll and the call never returns after PythonEngine.Initialize(); PythonEngine.Exec("import IPython"); Any suggestions on how to debug it? If run import IPython from the Console app that comes with solution it works fine. Am I missing some settings when I Initialize the PythonEngine vs Runtime.Py_Main? How do I determine what is causing the error? Thanks, Phat

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PythonEngine a singleton?
by Phat Loc 17 Mar '18

17 Mar '18

Hi All, I new to to Python and PythonDotNet. However, I am able to embed it in a clr application. Should the PythonEngine be treated as sigleton? When does it make sense to create an instance of the PythonEngine versus just calling the static methods? Thanks, Phat

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