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Python 元组|不可变序列,守护数据被篡改

  • 2026-08-20 04:01:01
Python 元组|不可变序列,守护数据被篡改

Python 元组｜不可变序列，守护数据被篡改

在 Python 各类数据容器里，元组有着不可替代的作用，和列表各司其职。
元组核心特征是不可变序列，创建完成后，无法直接增删、修改内部元素。
简单区分：列表是能够随意涂改的记事本，元组是定稿文档，内容固定不可直接更改。
很多人学到这里依旧分不清二者使用边界，稍不留意就会造成数据异常。

下期预告：列表与元组全方位对比，梳理办公场景选用标准。
下期预告：实战对比列表与元组，告诉你工作中如何取舍。
二选一，选吗

Python 自学 #Python 元组 #编程基础 #办公自动化 #Python 零基础

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      1. CONNECT:[ UseTime:0.001103s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
      2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001483s ]
      3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000715s ]
      4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000687s ]
      5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001374s ]
      6. SELECT * FROM `set` [ RunTime:0.001006s ]
      7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001464s ]
      8. SELECT * FROM `article` WHERE `id` = 507276 LIMIT 1 [ RunTime:0.000923s ]
      9. UPDATE `article` SET `lasttime` = 1787316810 WHERE `id` = 507276 [ RunTime:0.007361s ]
      10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.001172s ]
      11. SELECT * FROM `article` WHERE `id` < 507276 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.002823s ]
      12. SELECT * FROM `article` WHERE `id` > 507276 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002041s ]
      13. SELECT * FROM `article` WHERE `id` < 507276 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.022732s ]
      14. SELECT * FROM `article` WHERE `id` < 507276 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.066361s ]
      15. SELECT * FROM `article` WHERE `id` < 507276 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.116650s ]
      0.396935s