save project

diy2.py

@@ -6,8 +6,10 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    elif name != username:
-        print("账号输入错误")
-    else:
+    if password != userpassword:
         print("密码输入错误")
+    if username != username:
+        print("账号输入错误")
+        print("登录成功!")   
+    print("用户名和密码错误!请重新输入")
 print("欢迎来到贝尔编程!")