save project

jk.py

-player = input("请出拳(石头/剪刀/布")
-print("玩家出拳:"+player)
-import random
-list=["石头","剪刀","布"]
-computer=random.chorce(list)
-print("玩家出拳:"+computer)
-if player in list:               
-    if player == computer:
-        print("平局")
-    elif (player=="石头" and computer=="剪刀") or (player=="剪刀" and computer=="布") or (player=="布"  and computer=="石头"):
-        print("你赢了")
-    else:
-        print("你输了")
-else:
-    print("错")
+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名")
+    password = input("请输入密码")
+    if name == username and password == userpassword:
+        print("登陆成功")
+        break
+    elif name != username:
+        print("用户名不存在，请重新输入")
+    else：
+        print("密码输入有误，请重新输入")
+print("欢迎来到贝尔编程")
+
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