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snake.py

@@ -45,7 +45,7 @@ while True:
             if event.key == locals.K_DOWN and setheading != "up":
                 setheading = 'down'
                 snake_head = down
-
+            
     # 设置贪吃蛇的头部坐标
     if setheading == "right":
         x += 30
@@ -55,7 +55,7 @@ while True:
         y -= 30
     elif setheading == "down":
         y += 30
-    elif setheading == "A":
+    elif setheading == "a":
         y = 0
     
     position.append((x, y))