#!/usr/bin/env python2.7
import math
import pygame
from pygame.locals import *
pygame.init()
screen=pygame.display.set_mode((600,500))
pygame.display.set_caption("Drawing Arcs")

while True:
	for event in pygame.event.get():
		if event.type in (QUIT,KEYDOWN):
	#More Python Programming 30 gramming for the Absolute Beginner
			sys.exit()

	screen.fill((0,0,200))

	#draw the arc
	color =255,0,255
	position=200,150,200,200
	start_angle=math.radians(0)
	end_angle=math.radians(180)
	width=8
	pygame.draw.arc(screen,color,position,start_angle,end_angle,width)

	pygame.display.update() 
