save project

diy2.py

@@ -6,7 +6,7 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    else: name != username:
+    else: name = username:
         print("用户名不存在,请重新输入")
     else:
         print("用户名和密码错误!请重新输入")