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自学Python第十天:列表和元组长得一样,到底怎么选?

  • 2026-08-18 23:11:09
自学Python第十天:列表和元组长得一样,到底怎么选?

学到列表和元组，很多新手都会懵：

一个用中括号，一个用小括号，看起来差不多，到底该选谁？

其实判断方法很简单：数据后面还要增删改，就用列表；数据确定后不想被修改，就用元组。

别只会背语法，真正弄懂使用场景，写代码时才不会反复选错。

本文来自网友投稿或网络内容，如有侵犯您的权益请联系我们删除，联系邮箱：wyl860211@qq.com 。

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  1. CONNECT:[ UseTime:0.001154s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001576s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.015135s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.005080s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001398s ]
  6. SELECT * FROM `set` [ RunTime:0.005673s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001495s ]
  8. SELECT * FROM `article` WHERE `id` = 506119 LIMIT 1 [ RunTime:0.007324s ]
  9. UPDATE `article` SET `lasttime` = 1787325050 WHERE `id` = 506119 [ RunTime:0.016139s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.006624s ]
  11. SELECT * FROM `article` WHERE `id` < 506119 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.027533s ]
  12. SELECT * FROM `article` WHERE `id` > 506119 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.022415s ]
  13. SELECT * FROM `article` WHERE `id` < 506119 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.010776s ]
  14. SELECT * FROM `article` WHERE `id` < 506119 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001490s ]
  15. SELECT * FROM `article` WHERE `id` < 506119 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.075474s ]
0.377101s