save project

diy2.py

@@ -5,10 +5,11 @@ while True:
     password = input("请输入密码:")
     if name == username and password == userpassword:
         print("登录成功!")
+        print("欢迎来到贝尔编程!")
         break
     else:
-        if a!=username:
+        if name!=username:
             print("账号错误")
         else:
-             print("密码错误")
-print("欢迎来到贝尔编程!")
+            print("密码错误")
+