diff --git a/diy1.py b/diy1.py
index 6bd630b..213c54c 100644
--- a/diy1.py
+++ b/diy1.py
@@ -4,9 +4,12 @@ import random
 list=["石头","剪刀","布"]
 c=random.choice(list)
 print("电脑出拳"+c)
-if player==c:
-    print("平局")
-elif (player="石头" and c="剪刀") or (player="剪刀" and c="布") or (player="布" and c="石头"):
-    print("恭喜,你赢了)
-else (player="石头" and c="布") or (player="剪刀" and c="石头") or (player="布" and c="剪刀"):
-    print("很遗憾,你输了")  
\ No newline at end of file
+if player in list:
+    if player==c:
+        print("平局")
+    elif (player="石头" and c="剪刀") or (player="剪刀" and c="布") or (player="布" and c="石头"):
+        print("恭喜,你赢了)
+    else (player="石头" and c="布") or (player="剪刀" and c="石头") or (player="布" and c="剪刀"):
+        print("很遗憾,你输了")
+else:
+    print("输入错误")  
\ No newline at end of file