save project

diy2.py

@@ -6,5 +6,7 @@ while True:
     if name == username and password == userpassword:
     if name == username and password == userpassword:
         print("登录成功!")
         print("登录成功!")
         break
         break
-    print("用户名和密码错误!请重新输入")
-print("欢迎来到贝尔编程!")
+    if name==username and password!=userpassword:
+        print("密码错误")
\ No newline at end of file
+    if password==userpassword and name!=username:
+        print("账号错误")