How to get started with OpenTK using IronPython

# IronPython example program to demonstrate OpenTK
#
# Steps:
# 1. Create an empty IronPython project in Visual Studio
# 2. Place OpenTK.dll in the directory of the Python source file
# 3. Paste this source code into the Python source file
# 4. Run. You should see a colored triangle. Press ESC to quit.
#
# Copyright (c) 2013 Ashwin Nanjappa
# Released under the MIT License
 
import clr
import math

clr.AddReferenceToFile("OpenTK.dll")
import OpenTK as TK
import OpenTK.Graphics.OpenGL as OGL
import OpenTK.Input as TKInput

class Game(TK.GameWindow):

    def __init__(self):
        self.VSync = TK.VSyncMode.On
        self.base = super(Game, self)

    def OnLoad(self, e):
        self.base.OnLoad(e)
        OGL.GL.ClearColor(1, 1, 1, 0.0)

    def OnResize(self, e):
        self.base.OnResize(e)
        OGL.GL.Viewport(self.ClientRectangle.X, self.ClientRectangle.Y, self.ClientRectangle.Width, self.ClientRectangle.Height)
        projection = TK.Matrix4.CreatePerspectiveFieldOfView(math.pi / 4, self.Width / self.Height, 1.0, 64.0)
        OGL.GL.MatrixMode(OGL.MatrixMode.Projection)
        OGL.GL.LoadMatrix(projection)

    def OnUpdateFrame(self, e):
        self.base.OnUpdateFrame(e)
        if self.Keyboard[TKInput.Key.Escape]:
            self.Exit()

    def OnRenderFrame(self, e):
            self.base.OnRenderFrame(e)
            OGL.GL.Clear(OGL.ClearBufferMask.ColorBufferBit)
            modelview = TK.Matrix4.LookAt(TK.Vector3.Zero, TK.Vector3.UnitZ, TK.Vector3.UnitY)
            OGL.GL.MatrixMode(OGL.MatrixMode.Modelview)
            OGL.GL.LoadMatrix(modelview)

            OGL.GL.Begin(OGL.BeginMode.Triangles)
            OGL.GL.Color3(1.0, 1.0, 0.0)
            OGL.GL.Vertex3(-1.0, -1.0, 4.0)
            OGL.GL.Color3(1.0, 0.0, 0.0)
            OGL.GL.Vertex3(1.0, -1.0, 4.0)
            OGL.GL.Color3(0.2, 0.9, 1.0)
            OGL.GL.Vertex3(0.0, 1.0, 4.0)
            OGL.GL.End()

            self.SwapBuffers()

def main():
    game = Game()
    game.Run(30)

if "__main__" == __name__:
    main()