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备战金三银四之Python编程基础1

  • 2026-02-05 00:55:33
备战金三银四之Python编程基础1

备战金三银四之Python编程基础1

备战金三银四第一天🐞

self就是实例本身，绑定属性/方法到具体对象，让类的每个实例独立存数据、调方法。

核心2个作用：

1. 访问实例属性（如self.name）、调用实例方法，区分实例变量和局部变量

2. 让类知道操作的是哪个具体实例（多实例互不干扰）

示例如图🌰

补充3个关键注意点：

✅ 类中实例方法第一个参数必须写self（名字可改但约定俗成用self）

✅ 调用时不用传self，Python会自动把实例本身传进去

✅ 类方法用cls（绑定类）、静态方法不用self/cls（无绑定）

八股文已整理成文档（可通过关注后台自取，free🐛）

#软件测试 #软件测试面试 #软件测试自学 #编程 #自学软件测试 #金三银四 #软件测试学习 #Python编程 #八股文面试 #面试题目 #编程新手指南 #程序员成长之路 #编程入门教程 #编程小白进阶 #技术分享与交流 #Python学习笔记 #代码实战技巧 #Python编程基础 #备战金三银四 #Python自我引用

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  140. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.001047s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001802s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001386s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000659s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001478s ]
  6. SELECT * FROM `set` [ RunTime:0.000596s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001586s ]
  8. SELECT * FROM `article` WHERE `id` = 472208 LIMIT 1 [ RunTime:0.001185s ]
  9. UPDATE `article` SET `lasttime` = 1770438024 WHERE `id` = 472208 [ RunTime:0.004271s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.003295s ]
  11. SELECT * FROM `article` WHERE `id` < 472208 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001235s ]
  12. SELECT * FROM `article` WHERE `id` > 472208 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002939s ]
  13. SELECT * FROM `article` WHERE `id` < 472208 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.023117s ]
  14. SELECT * FROM `article` WHERE `id` < 472208 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.006705s ]
  15. SELECT * FROM `article` WHERE `id` < 472208 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.009854s ]
0.243026s