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整理了一份详细的Python数据清洗及预处理方法

  • 2026-02-28 19:08:18
整理了一份详细的Python数据清洗及预处理方法

Python数据清洗及预处理❗️

Python数据清洗与预处理是数据分析流程中的关键环节，主要涉及处理缺失值、异常值、重复数据、数据类型转换等操作

.

数据加载与初步检查

缺失值处理

异常值处理

重复值处理

数据类型转换

内容较多，建议收藏练习

.

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  1. CONNECT:[ UseTime:0.001097s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001686s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000723s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000681s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001696s ]
  6. SELECT * FROM `set` [ RunTime:0.000599s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001568s ]
  8. SELECT * FROM `article` WHERE `id` = 475406 LIMIT 1 [ RunTime:0.001013s ]
  9. UPDATE `article` SET `lasttime` = 1772298655 WHERE `id` = 475406 [ RunTime:0.002156s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000587s ]
  11. SELECT * FROM `article` WHERE `id` < 475406 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001059s ]
  12. SELECT * FROM `article` WHERE `id` > 475406 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001088s ]
  13. SELECT * FROM `article` WHERE `id` < 475406 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002315s ]
  14. SELECT * FROM `article` WHERE `id` < 475406 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002630s ]
  15. SELECT * FROM `article` WHERE `id` < 475406 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005607s ]
0.190300s