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<Description>Python and CLR (.NET and Mono) cross-platform language interop</Description>

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`pythonnet` is a package that gives .NET programmers ability to

integrate Python engine and use Python libraries.

- You must set`Runtime.PythonDLL` property or`PYTHONNET_PYDLL` environment variable,

otherwise you will receive`BadPythonDllException`

(internal, derived from`MissingMethodException`) upon calling`Initialize`.

Typical values are`python38.dll` (Windows),`libpython3.8.dylib` (Mac),

`libpython3.8.so` (most other*nix). Full path may be required.

- All calls to Python should be inside a

`using (Py.GIL()) {/* Your code here */}` block.

- Import python modules using`dynamic mod = Py.Import("mod")`, then

you can call functions as normal, eg`mod.func(args)`.

You can also access Python objects via`PyObject` and dervied types

instead of using`dynamic`.

- Use`mod.func(args, Py.kw("keywordargname", keywordargvalue))` or

`mod.func(args, keywordargname: keywordargvalue)` to apply keyword

arguments.

- Mathematical operations involving python and literal/managed types

must have the python object first, eg.`np.pi * 2` works,

`2 * np.pi` doesn't.

usingvar_=Py.GIL();

dynamicnp=Py.Import("numpy");

Console.WriteLine(np.cos(np.pi*2));

dynamicsin=np.sin;

Console.WriteLine(sin(5));

doublec= (double)(np.cos(5)+sin(5));

Console.WriteLine(c);

dynamica=np.array(newList<float> {1,2,3 });

Console.WriteLine(a.dtype);

dynamicb=np.array(newList<float> {6,5,4 },dtype:np.int32);

Console.WriteLine(b.dtype);

Console.WriteLine(a*b);

Console.ReadKey();

Output:

Information on installation, FAQ, troubleshooting, debugging, and

projects using pythonnet can be found in the Wiki:

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This project is supported by the[.NET Foundation](https://dotnetfoundation.org).