save project

snake.py

@@ -6,7 +6,7 @@ pygame.init()
 # 创建一个窗口
 screen = pygame.display.set_mode((660,480))
 
-backgaround = pygame.image.load('bg.png')
+background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
@@ -19,4 +19,6 @@ while True:
     screen.blit(right,(240,120))
     screen.blit(body,(210,120))
     screen.blit(body,(180,120))
-    screen.blit(body,(180,90))
\ No newline at end of file
+    screen.blit(body,(180,90))
+
+    pygame.display.update()
\ No newline at end of file