[Python.NET] Problem whith DirectX Mesh importation

"from CLR.Microsoft.DirectX.Direct3D import Mesh" => ImportError: cannot import name Mesh It seems that 'Mesh' is define in the Direct3DX library because when I remove the reference the "Microsoft.DirectX.Direct3DX" in the reference list in a directx C# sample, I have the same error... How can I add a refrence like in C# ? The "import CLR.Microsoft.DirectX.Direct3DX as D3DX" doesn't work. Thanks for help.