Mailman 3 August 2015 - Python.NET

PythonNet on Cygwin
by Nikhil Garg 21 Jun '17

21 Jun '17

Hi Guys, I was wondering if anyone knows how to make Python for .Net work on cygwin installation of python. I have been looking around and find a mixed bag of information. If anyone knows of the working version of Python for .Net and its dependency, I would appreciate if you could share it with me. Currently, I am using a generic windows version and it works just fine, but I need it to work on Cygwin version of python. I appreciate any helpful replies. Thanks, Nikhil

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cx_freeze and python.net
by Boris Burdin 21 May '17

21 May '17

Hello everybody, I'm trying to build a python.net application using cx-freeze . Once the application is built, I put in my final folder the Python.Runtime.dll. but it stil doesn't seem to work . Actually, when I run the .exe file, nothing is happening. So, I wonder if there were something else to do, another dll to put in the folder, or any option to use with cx_freeze when building the application ? i would be very grateful if you could help me on this matter .. Thanks in advance, Boris

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pythonnet appdomain(s)
by Adam Klein 07 Sep '16

07 Sep '16

Hello, Is there a design reason that pythonnet loads C# assemblies into its own AppDomain rather than establishing a separate AppDomain? It would be useful for instance when developing in C# in parallel with writing python code (say, in the ipython REPL) to be able to reload C# assemblies dynamically. Also, we've found it useful in Initialize() to enable shadow copying, to prevent file locking, ie internal static void Initialize() { ... AppDomain domain = AppDomain.CurrentDomain; // prevent file locking domain.SetShadowCopyFiles(); domain.SetShadowCopyPath(null); Although these are deprecated methods, and really it should be establishing a new AppDomain as above. Regards, Adam _________________________________ Adam D Klein BlueMountain Capital Management LLC 280 Park Ave, 5th Floor East New York, NY 10017 O:(212)905-2136 C:(917)331-8871

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Debugging CPYTHON embedded in .NET
by Denis Akhiyarov 31 Jan '16

31 Jan '16

Dear users and developers of PythonNET: How do you debug CPython embedded in . NET? Did you find any reliable way to do this with IDE such as PTVS or Pycharm? PTVS offers mixed-mode and remote debugging, none of which seem to be usable with PythonNET. Thanks, Denis

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pythonnet 2.0.0 released
by Tony Roberts 29 Jan '16

29 Jan '16

Hi, I've finally gotten round to finishing off the last couple of things that were blocking an 'official' 2.0.0 release (to do with packaging as wheels/source dist). There is now a 2.0.0 release available on PyPI ( https://pypi.python.org/pypi/pythonnet), with binary wheels for Windows (32 and 64 bit) and a source distribution for Linux and Mac. The next task will be to integrate the changes from the renshawbay/pythonnet fork to add Python 3 support. cheers, Tony

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bug in exception handling
by Jonathan Mizrahi 15 Aug '15

15 Aug '15

Hi, I may have found a bug in how the clr package converts .net exceptions to Python exceptions, at least as it relates to PyQt. If I try and add a library which does not exist, and then try and print the exception, PyQt is subsequently unable to initialize OLE. This means that PyQt applications cannot use copy/paste and drag-and-drop. Here is a minimal example: import clr import sys from PyQt4 import QtGui try: clr.AddReference('foo') #This doesn't exist except Exception as e: print e app = QtGui.QApplication(sys.argv) app.exec_() This results in the Qt error: Qt: Could not initialize OLE (error 80010106) The program runs, but copy/paste and drag-and-drop fails. If I do not try and print the exception (replace the except block with 'pass'), the program runs without any problems. Also, if the library exists I have no problems. Is this something anyone has seen before? Thanks! Jonathan Mizrahi

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Setup sys.path in Embedded Application
by Daniel Fernandez 06 Aug '15

06 Aug '15

Hi Everyone, I'm looking at embedding python in my .NET app. I was wondering what is the best practice for adding additional paths to the sys.path? I want the standard python sys path but additional paths for my own python scripts. Do I just Py.Import("sys") and then add it there or is there some other way? Thanks. Danny

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