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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To use python in .NET for multitasking purposes
by Amin Darestani April 21, 2019

April 21, 2019

Hello, I Have designed a .net Project which uses a python file in itself and I need to implement Multitasking in my .Net Project because of speeding up the execution. I use Task Parallel Library in C# and I call python file by Process in each task but It doesn't speed up my application and multitasking is not implemented correctly. So I need to use python script in my task directly to speed up my application. Would you please help me to find a solution to use maximum power of my CPU to do my pattern recognition project faster? Best Regards [cid:image001.jpg@01D15D05.168687B0] Drive with Quality Amin Darestani Software Engineer No. 253, 11th km of Karaj Makhsoos Rd., Tehran, 13998-13411, IRAN. Tel: +98 21 44 90 81 40 - 7 (Ext.: xxxx ) Fax: +98 21 44 90 81 48 Mobile: +98 936 737 71 45 Email: a.darestani(a)crouse.ir<mailto:a.darestani@crouse.ir> Website: www.crouse.ir<http://www.crouse.ir/> [cid:image002.jpg@01D15D05.168687B0] Member of TOP 100 Iranian Companies Ranked 41 in 2018

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Restrictions on assembly names
by Johannes Strecha April 5, 2019

April 5, 2019

Dear list, I'm having trouble to import assemblies with certain names. I found it impossible to import assemblies named "Library", and I cannot import arbitrarily named assemblies that live in a subfolder having the same name as the assembly. Here are some details of a working configuration (MWE): mylib.cs: > namespace mylib { > public static class mylibClass { > public static double DoubleThis (double x) => x*2; > } > } mylib.csproj: > <?xml version="1.0" encoding="utf-8"?> > <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> > <PropertyGroup> > <Platform>AnyCPU</Platform> > <OutputType>Library</OutputType> > <OutputPath>bin\</OutputPath> > <DefineConstants>TRACE;DEBUG</DefineConstants> > </PropertyGroup> > <ItemGroup> > <Compile Include="*.cs" /> > </ItemGroup> > <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" /> > </Project> build with "msbuild mylib.csproj", copy the .dll from the bin directory to the python script (avoid modifying the path). Python (3.6.6 from Anaconda): > clr.AddReference('mylib') > import mylib > print(mylib) > print(mylib.mylibClass.DoubleThis(3)) This will print "<module 'mylib'>" and "6.0". When I name everything "Library" instead of mylib, or put mylib.dll in a directory called 'mylib', the import works, but the module doesn't contain any symbols/attributes. (In the latter case, I use clr.AddReference('mylib/mylib'), of course.) Then, print(mylib) or print(Library) prints "<module 'Library' (namespace)>", the main difference being the added "(namespace)". The imported module is empty, calls to something in the assembly raise an AttributeError (e.g. "...has no attribute LibraryClass"). Is this a known limitation? Should I post a bug report? Are there any other restrictions I should know about? Thank you for considering. Regards, J.St.

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Python.NET

April 2019