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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def on_resize(width, height):
 	"""Setup 3D projection"""

	glViewport(0, 0, width, height)
	glMatrixMode(GL_PROJECTION)
	glLoadIdentity()
	gluPerspective(30, 1.0*width/height, 0.1, 1000.0)
	glMatrixMode(GL_MODELVIEW)
	glLoadIdentity()