BERJAYA

Multithreading/multiprocessing
by Alan Macdonald May 5, 2025

May 5, 2025

Hello, has anyone successfully used multithreading or multiprocessing with Python.Net? I tried to multi-thread from the .Net side and the Python.Net libraries seem to have issues in the RunScript method. I had to take an implementation off the web of that method because the shipped method doesn’t seem to work. I then had a working multi-processing example from CPython that I tried from Python.Net but it gives an error 'module' object has no attribute 'argv' When trying to create a process pool by executing the line pool = Pool(processes=4) Is it possible to do multithreading or multiprocessing with Python.Net? Thanks, Alan

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PythonNet on Cygwin
by Nikhil Garg June 21, 2017

June 21, 2017

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 May 22, 2017

May 22, 2017

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 Sept. 7, 2016

Sept. 7, 2016

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 Jan. 31, 2016

Jan. 31, 2016

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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Memory leak problem in function "AsManagedObject"
by Eliana Mendes Jan. 29, 2016

Jan. 29, 2016

Hello experts, I'm having a memory leak problem when using the function AsManagedObject(typeof(double)). Basically I have something like this: PyTuple myTuple = PyTuple.AsTuple(result); double result0 = (double)myTuple[0].AsManagedObject(typeof(double)); double result1 = (double)myTuple[1].AsManagedObject(typeof(double)); myTuple.Dispose(); where "result" is just a PyObject that returned from a python function. I simplified the code above just so you can understand better, but the thing is that the line that calls "AsManagedObject” is executed thousands of times and it is increasing significantly the memory heap (it goes over 3 GB of memory in my scenario and it’s not released after execution). If I don't call just this specific function the memory remains stable. But I don’t know any other way to convert the PyObject to "double" unless using the “AsManagedObject” function. It sounds to me that some objects are allocated inside the "AsManagedObject" method and they are not being released. Maybe it’s a bug there. Any ideas? I'm using latest version of python for .NET. Thank you! Eliana Mendes Software Engineer

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pythonnet 2.0.0 released
by Tony Roberts Jan. 29, 2016

Jan. 29, 2016

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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Versions support
by Simunic,Kresimir Jan. 27, 2016

Jan. 27, 2016

Hi there, Can someone tell me if Python.Net supports some newer Versions of Python (as 3.3) ? The only Python.Runtime DLL I could find was for 2.7 Version. Thanks Regards -- Krešimir Šimunić Automatisierung Reifenhäuser Reicofil GmbH & Co. KG Spicher Straße 46, 53844 Troisdorf, Germany Registergericht Siegburg, Reg.Nr. HR A 4534 USt-IdNr. DE 814359351, Steuer-Nr. 5220/5760/0426 Reifenhäuser Reicofil Verwaltungs-GmbH Registergericht Siegburg, Reg.Nr. HR B 788 Geschäftsführer: Dr.-Ing. Bernd Kunze Please note: This message may contain information which is privileged, confidential and proprietary.

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Python.NET

January 2016