save project

snake.py

@@ -27,17 +27,17 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-        if event.type == locals.KETDOWN:
-            if event.key == locals.K_RIGHT and setheading !="right":    
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading !="left":    
                setheading = 'right'
                snake_head = right
-            if event.key == locals.K_LEFT and setheading !="down":
+            if event.key == locals.K_DOWN and setheading !="up":
                setheading = "down"
                snake_head = down 
-            if event.key == locals.K_UP and setheading != "up":
+            if event.key == locals.K_UP and setheading != "down":
                setheading = "up"
                snake_head = up
-            if event.key == locals.K_DOWN and setheading != "left":
+            if event.key == locals.K_LEFT and setheading != "right":
                setheading = "left"
                snake_head = left 
     if setheading == "right":