View difference between Paste ID: bVPGsjuT and 8UFqkXVv

 def Instructions():
 
     # declare only once
     paragraph = """Your are the last surviving rhino. Your horn
         is worth millions! Right now you are trapped in a zoo and
         waiting to be slaughtered for your horn. But you can't give
         up! Escape from the tribesmen and zoo security so you can
         enjoy your life as a free being once again"""
 
     # load only once
     image = pygame.image.load("background0.jpg").convert()
 
     # create only once
     InstructionFont = pygame.font.SysFont("elephant",15)
 
     # get only once
     TextSurf, TextRect = text_objects(paragraph, InstructionFont)
 
     # set only once
     #TextRect.center = ((screen_width/2),(screen_height/2))
     TextRect.center = screen.center
 
     # create button only once
     button = Buttons("BACK",100,500,120,50,TURQUOISE,DARK_TURQUOISE,"back")
 
 
 
     # blit only once
     screen.blit(image, (0,0))
 
     # blit only once
     screen.blit(TextSurf, TextRect)
 
     # draw only once
     button.draw()
 
-        # blit 15 times per second (15 FPS)
+    # update only once
-        screen.blit(image, (0,0))
+    pygame.display.update()
 
-        # blit 15 times per second (15 FPS)
+
-        screen.blit(TextSurf, TextRect)
+
     # repeat thousands times in one second.
-        # draw 15 times per second (15 FPS)
+
-        button.draw()
+
         # check events 15 times per second (15 FPS)
-        # update screen 15 times per second (15 FPS)
+
-        pygame.display.update()
+
                 pygame.quit()
                 quit()
 
         clock.tick(15) # <- slow down to 15 FPS