save project

snake.py

@@ -28,7 +28,7 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-        if event.type == locals.KEYDOWN:
+        elif event.type == locals.KEYDOWN:
             if event.key == locals.K_RIGHT and setheading != "left":
                 setheading = 'right'
                 snake_head = right
@@ -47,7 +47,7 @@ while True:
         x += 30
     elif setheading == "left":
         x -= 30
-    elif setheading == "up":
+    elif  setheading == "up":
         y -= 30
     else:
         y += 30