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《Python编程:从入门到实践》可视化学习9

  • 2026-08-18 23:12:08
《Python编程:从入门到实践》可视化学习9

《Python编程：从入门到实践》可视化学习9

1、__init__()和self在创建实例时分别做什么？
2、直接改属性和通过方法改属性有什么差别？
3、继承、重写和组合分别复用什么？
4、类、模块和标准库怎样形成可维护项目？
#python学习 #python入门

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  1. CONNECT:[ UseTime:0.001003s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001420s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000639s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000641s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001314s ]
  6. SELECT * FROM `set` [ RunTime:0.000557s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001629s ]
  8. SELECT * FROM `article` WHERE `id` = 510588 LIMIT 1 [ RunTime:0.000979s ]
  9. UPDATE `article` SET `lasttime` = 1787290719 WHERE `id` = 510588 [ RunTime:0.037957s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000629s ]
  11. SELECT * FROM `article` WHERE `id` < 510588 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001062s ]
  12. SELECT * FROM `article` WHERE `id` > 510588 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001161s ]
  13. SELECT * FROM `article` WHERE `id` < 510588 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002360s ]
  14. SELECT * FROM `article` WHERE `id` < 510588 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.017486s ]
  15. SELECT * FROM `article` WHERE `id` < 510588 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001775s ]
0.242452s