python.cs

using System;
using System.Runtime.InteropServices;

namespace CPythonBinding
{
    class Program
    {
        [DllImport("python34.dll")]
        public static extern void Py_Initialize();

        [DllImport("python34.dll", CallingConvention=CallingConvention.Cdecl)]
        public static extern int PyRun_SimpleString([MarshalAs(UnmanagedType.LPStr)]string toRun);

        static void Main(string[] args)
        {
            Py_Initialize();
            PyRun_SimpleString("print('yolo')");
        }
    }
}