''' pg_draw_circle_save101.py  draw a blue solid circle on a white background  save the drawing to an image file  for result see http://prntscr.com/156wxi  tested with Python 2.7 and PyGame 1.9.2 by vegaseat  16may2013  '''     import pygame as pg     # pygame uses (r, g, b) color tuples  white = (255, 255, 255)  blue = (0, 0, 255)     width = 300  height = 300     # create the display window  win = pg.display.set_mode((width, height))  # optional title bar caption  pg.display.set_caption("Pygame draw circle and save")  # default background is black, so make it white  win.fill(white)     # draw a blue circle  # center coordinates (x, y)  center = (width//2, height//2)  radius = min(center)  # width of 0 (default) fills the circle  # otherwise it is thickness of outline  width = 0  # draw.circle(Surface, color, pos, radius, width)  pg.draw.circle(win, blue, center, radius, width)     # now save the drawing  # can save as .bmp .tga .png or .jpg  fname = "circle_blue.png"  pg.image.save(win, fname)  print("file {} has been saved".format(fname))     # update the display window to show the drawing  pg.display.flip()     # event loop and exit conditions  # (press escape key or click window title bar x to exit)  while True:      for event in pg.event.get():          if event.type == pg.QUIT:              # most reliable exit on x click              pg.quit()              raise SystemExit          elif event.type == pg.KEYDOWN:              # optional exit with escape key              if event.key == pg.K_ESCAPE:                  pg.quit()                  raise SystemExit