save project

diy2.py

@@ -5,9 +5,9 @@ while True:
     password = input("请输入密码:")
     if name == username and password == userpassword:
         print("登录成功!")
-    print("用户名和密码错误!请重新输入")
         break
-    if name != userpassword:
+    print("用户名和密码错误!请重新输入")
+    if name != username:
         print("用户名不存在,请重新输入!")
     if password != userpassword:
         print("密码输入有误,请重新输入！")