save project

snake.py

@@ -26,23 +26,23 @@ while True:
         if event.type == locals.QUIT:
             exit()  #接收到退出事件后退出程序
         elif event.type==locals.KEYDOWN:
-            if event.key==locals.K_RIGHT and setheading!="left":
+            if event.key==locals.K_RIGHT and setheading!='left':
                 setheading='right'
                 snack_head=right
-            if event.key==locals.K_LEFT and setheading!="right":
+            if event.key==locals.K_LEFT and setheading!='right':
                 setheading='left'
                 snack_head=left
-            if event.key==locals.K_UP and setheading!="down":
+            if event.key==locals.K_UP and setheading!='down':
                 setheading='up'
                 snack_head=up
-            if event.key==locals.K_DOWN and setheading!="up":
+            if event.key==locals.K_DOWN and setheading!='up':
                 setheading='down'
                 snack_head=down  #判断按键
-    if setheading=="right":
+    if setheading=='right':
         x+=30
-    elif setheading=="left":
+    elif setheading=='left':
         x-=30
-    elif setheading=="up":
+    elif setheading=='up':
         y-=30
     else:
         y+=30  #移动