Mailman 3 March 2011 - Python.NET

Setting PYTHONPATH from code
by Sharon Rozenblum 05 Apr '13

05 Apr '13

Hi! Can someone tell me how to set PYTHONPATH variable in code when working with Python.Runtime.dll without changing the value in the system variables before. Thanks SHARON ________________________________ PLEASE NOTE: The information contained in this electronic mail message is intended only for the use of the designated recipient(s) named above. If the reader of this message is not the intended recipient, you are hereby notified that you have received this message in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify the sender by telephone or e-mail (as shown above) immediately and destroy any and all copies of this message in your possession (whether hard copies or electronically stored copies).

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Better doc strings.
by Brad Byrd 25 Apr '11

25 Apr '11

I'm trying to provide better documentation for some C# classes that are called from Python. Ideally, I'd like to markup my class in C#, either with the standard XML comments or with something like a [PythonDocAttribute], and have this documentation show up as the __doc__ string for the method or class in Python. That way, the clients of my wrapped objects will see nice tool-tips on my classes as they code away in their IDE. So, is this easily done? Has anyone else crossed this bridge before? Does something already exist that would work before I start hacking on the Python.NET source? (Also, are the archives of the list searchable somewhere? I just saw clickable-by-month archives, not searchable.) Thanks, Brad...

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PyTables working with python not working with python.net
by Guillaume Pichard 02 Apr '11

02 Apr '11

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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Pre-method and post-method call hooks?
by Brad Byrd 28 Mar '11

28 Mar '11

Other than just modifying the source (in methodbinding.cs?) and doing it myself, is there an easy way to globally hook methods so that I can do something immediately before and after a method invocation from Python? For example, I'd like to acquire/release a lock or check if some subsystem is started up, and I'd be a lot cleaner to do it in one place instead of at the top/bottom of every single public function that I expose to Python. Thanks, Brad...

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Application shutdown when Py_Initialize()
by Guillaume Pichard 25 Mar '11

25 Mar '11

Hello, I'm trying to get python.net work in c#. But I'm stuck at the first step which is to initialize python. When calling Py_initialize() my application shutdown without warning or throwing exception. I'm using python.net for python 2.7, I have installed python 2.7 and added python to path environment variable. What do I do wrong ? Thanks.

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Fwd: Python.NET activity
by Barton 23 Mar '11

23 Mar '11

I thought the list might be interested in something that's going on over on the python-win32 list: It seems that my favorite project is getting some attention... http://mail.python.org/pipermail/python-win32/2011-March/011247.html On 28/02/2011 09:40, Tim Golden wrote: >/ Well, the last Svn commit was 4 weeks ago, by "barton_c", and Python27 />/ "support" (ie switches") were added 2 months ago. Looks like "Barton_C" />/ needs to do some advertising. I'll see if I can contact him/her through />/ sf. / Got this reply from Barton, who's not subscribed to this list: """ Using the current state of the art, I freely mix wxPython, MS Framework 2.0 (others are hooking to .NET 4.0) and ctypes in full GUI apps and drivers. The current challenge for me is getting the whole thing working (together) on Ubuntu Maverick (10.10). I have brought the PythonDotNet project up to python27 compatibility, but have not published the binaries yet. """ TJG -------- Original Message -------- Subject: Python.NET activity Date: Mon, 28 Feb 2011 09:44:54 +0000 From: Tim Golden <mail(a)timgolden.me.uk> To: barton_c(a)users.sourceforge.net Hi, Barton. There was some discussion on the python-win32 list about the status of Python.NET and I noticed that you'd been comitting in the last few weeks. Would you care to chime in to the conversation? http://mail.python.org/pipermail/python-win32/2011-February/011222.html Thanks TJG

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Working with XAML and WPF
by Victor Demydov 19 Mar '11

19 Mar '11

Hello, Has anyone been trying to use PythonNET to drive a WPF-based application? I am hitting a wall at first step - parsing my XAML with XamlReader. It is failing with a message indicative of bad Xaml, but it is fine (runs in IronPython). Google is proving futile after few hours of searching... any help would be greatly appreciated! Sample Code: # Reference the WPF assemblies import clr clr.AddReference("PresentationFramework.Classic, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35") clr.AddReference("PresentationCore, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35") import System.Windows Application = System.Windows.Application from System.Windows.Markup import XamlReader class XamlLoader(object): def __init__(self, xmlData): self.Root = XamlReader.Parse( xmlData ) def __getattr__(self, item): return self.Root.FindName(item) print "begin run" xamldata = """ <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="WpfApplication3" Height="300" Width="300"> <Grid></Grid> </Window> """ print xamldata xaml = XamlLoader( xamldata ) my_app = Application() my_app.Run(xaml.Root) print "ending run"

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Pythonnet for Python2.7 binary distribution?
by Olof Bjarnason 07 Mar '11

07 Mar '11

Hi Python.NET (is that the correct spelling..?) community! I learned of Python.NET today. I love the idea of being able to use the .NET assemblies/types directly from CPython. I've tried IronPython before, but it just does not feel Python enough for me :) But I failed to play with Python.NET tonight, since I'm at a CPython2.7 computer. I couldn't find a 2.7 port of Python.NET on SF, even though I found a note about the changes necessary already being available: http://sourceforge.net/tracker/?func=detail&aid=3094895&group_id=162464&ati… /Olof PS. I'd love to help somehow with this project, since my day-time work is with a C# program, and I'm trying to integrate Python into "the loop" more and more. DS

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