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Python 实例代码:从入门到精通,100 + 案例直接跑

  • 2026-03-18 05:07:17
Python 实例代码:从入门到精通,100 + 案例直接跑

学 Python 最忌 “只懂语法，不会实操”！这份 Python 实例代码合集，按 “入门→进阶→精通” 逻辑整理，覆盖变量、循环、函数、类、爬虫、数据分析等所有核心场景，每个案例都附运行效果 + 代码解析，新手跟着敲、跟着练，不用死记硬背，轻松从入门走到精通！

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  2. 运行时间 : 0.108424s [ 吞吐率：9.22req/s ] 内存消耗：4,577.65kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=3b3ba1edd92bade5bbafba0a90f67a31
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  1. CONNECT:[ UseTime:0.000470s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000831s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000371s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000413s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000667s ]
  6. SELECT * FROM `set` [ RunTime:0.000279s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000771s ]
  8. SELECT * FROM `article` WHERE `id` = 480491 LIMIT 1 [ RunTime:0.000446s ]
  9. UPDATE `article` SET `lasttime` = 1774589262 WHERE `id` = 480491 [ RunTime:0.011747s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000363s ]
  11. SELECT * FROM `article` WHERE `id` < 480491 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000582s ]
  12. SELECT * FROM `article` WHERE `id` > 480491 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000512s ]
  13. SELECT * FROM `article` WHERE `id` < 480491 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.011203s ]
  14. SELECT * FROM `article` WHERE `id` < 480491 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001285s ]
  15. SELECT * FROM `article` WHERE `id` < 480491 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005718s ]
0.110002s