save project

snake.py

@@ -27,16 +27,16 @@ while True:
             exit()
         if event.type == locals.KEYDOWN:
             if event.key == locals.K_RIGHT and setheading != 'left':
-                setheading == 'right'
+                setheading = "right"
                 set_head = right
             if event.key == locals.K_LEFT and setheading != 'right':
-                setheading == 'left'
+                setheading = "left"
                 set_head = left            
             if event.key == locals.K_UP and setheading != 'down':
-                setheading == 'up'
+                setheading = "up"
                 set_head = up
             if event.key == locals.K_DOWN and setheading != 'up':
-                setheading == 'down'
+                setheading = "down"
                 set_head = down
     if setheading == "right":
         x += 30
@@ -60,4 +60,4 @@ while True:
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    FPS.tick(3)
\ No newline at end of file
+    FPS.tick(1)
\ No newline at end of file