title: Modify ellipse coordinates in pygame
body: <p>I have been trying to move an ellipse in pygame.</p>
  <p>This is my code:</p>
  <pre><code>import pygame
  
  import pygame
  
  pygame.init()
  oW = 400
  oH = 500
  
  black = (0,0,0)
  red = (255,0,0)
  blue = (0,0,255)
  
  gameDisplay = pygame.display.set_mode((800,800))
  gameDisplay.fill(black)
  
  
  Sun = pygame.draw.circle(gameDisplay, red, (400,400), 60)
  
  
  while True:
      for event in pygame.event.get():
          if event.type == pygame.QUIT:
              pygame.quit()
              quit()
          
          #Key input over here
          if event.type == pygame.KEYDOWN:
              if event.key == pygame.K_a:
                  oW = oW + 10
              if event.key == pygame.K_d:
                  oH = oH + 10
          Orbit = pygame.draw.ellipse(gameDisplay, blue, (200, 250, oW, oH), 1)
      pygame.display.update()
  
  </code></pre>
  <p>How could I make it so that rather than the ellipse constantly duplicating itself and making copies, it's coordinates would just move the original(first one)? Currently, if you run the program below, the ellipse will make copies of itself in the new coordinates rather than modifying the original so there will be a lot of ellipses if you press a or d. After researching online, some people were suggesting putting a black shape over everything and then redrawing it but that's not really what I'm going for here, I just want the shape to update without constantly duplicating itself.</p>