save project

lk.py

@@ -5,10 +5,9 @@ while True:
     password = input("请输入密码：")
     if name == Username and password == userpassword:
         print("登录成功！")
-        break
-    if name !=Username:
-        print("用户名错误，请重新输入！")
+    elif name !=Username:
+        print("用户名不存在，请重新输入！")
         continue
-    if password != userpassword:
+    elif:
         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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