save project

diy2.py

@@ -6,6 +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
+    else: 
       print("用户名和密码错误!请重新输入")
       print("用户名和密码错误!请重新输入")
       if name!=username:
       if name!=username:
         print("用户名错误")
         print("用户名错误")