save project

diy2.py

@@ -6,9 +6,9 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    if name !=username:
+    else name !=username:
         print("用户不存在")
-    if password !=userpassword:
+    else password !=userpassword:
         print("重输")
         continue
     print("用户名和密码错误!请重新输入")