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Python for .NET is a package that gives Python programmers nearlyseamless integration with the .NET Common Language Runtime (CLR) andprovides a powerful application scripting tool for .NET developers.It allows Python code to interact with the CLR, and may also be used toembed Python into a .NET application.

Python for .NET allows CLR namespaces to be treated essentiallyas Python packages.

importclrfromSystemimportStringfromSystem.Collectionsimport*

To load an assembly, use theAddReference function in theclr module:

importclrclr.AddReference("System.Windows.Forms")fromSystem.Windows.FormsimportForm

• All calls to python should be insideausing (Py.GIL()) {/_ Your code here _/} block.
• Import python modules usingdynamic mod = Py.Import("mod"),then you can call functions as normal, egmod.func(args).
• Usemod.func(args, Py.kw("keywordargname", keywordargvalue))to apply keyword arguments.
• All python objects should be declared asdynamic type.
• Mathematical operations involving python and literal/managed types musthave the python object first, egnp.pi_2 works,2_np.pi doesn't.

staticvoidMain(string[]args){using(Py.GIL()){dynamicnp=Py.Import("numpy");dynamicsin=np.sin;Console.WriteLine(np.cos(np.pi*2));Console.WriteLine(sin(5));doublec=np.cos(5)+sin(5);Console.WriteLine(c);/* this block is temporarily disabled due to regression        dynamic a = np.array(new List<float> { 1, 2, 3 });        dynamic b = np.array(new List<float> { 6, 5, 4 }, Py.kw("dtype", np.int32));        Console.WriteLine(a.dtype);        Console.WriteLine(b.dtype);        Console.WriteLine(a * b); */Console.ReadKey();}}

Output:

1.0-0.958924274663-0.6752620892float64int32[6.10.12.]