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9个Python实用短代码,告别重复造轮子!

  • 2026-08-18 23:10:44
9个Python实用短代码,告别重复造轮子!

写Python时，总有一些小功能反复出现：初始化二维数组、分割列表、找最大值下标、扁平化嵌套结构。与其每次都重新打代码，不如整理成快捷合集，有需要可以即时使用。

整理了9个日常高频使用的Python短代码片段，每个都经过精简优化。

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:0.001063s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001457s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002440s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.016584s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001404s ]
  6. SELECT * FROM `set` [ RunTime:0.005388s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.002336s ]
  8. SELECT * FROM `article` WHERE `id` = 505684 LIMIT 1 [ RunTime:0.002236s ]
  9. UPDATE `article` SET `lasttime` = 1787294116 WHERE `id` = 505684 [ RunTime:0.011778s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000721s ]
  11. SELECT * FROM `article` WHERE `id` < 505684 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001141s ]
  12. SELECT * FROM `article` WHERE `id` > 505684 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001118s ]
  13. SELECT * FROM `article` WHERE `id` < 505684 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002406s ]
  14. SELECT * FROM `article` WHERE `id` < 505684 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.011851s ]
  15. SELECT * FROM `article` WHERE `id` < 505684 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.020813s ]
0.250109s