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Python数据预处理7大步骤

  • 2026-03-27 16:35:37
Python数据预处理7大步骤

Python数据预处理7大步骤

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  1. CONNECT:[ UseTime:0.000962s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001787s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.018800s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001905s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001327s ]
  6. SELECT * FROM `set` [ RunTime:0.000651s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001481s ]
  8. SELECT * FROM `article` WHERE `id` = 483355 LIMIT 1 [ RunTime:0.003387s ]
  9. UPDATE `article` SET `lasttime` = 1774622168 WHERE `id` = 483355 [ RunTime:0.004861s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000907s ]
  11. SELECT * FROM `article` WHERE `id` < 483355 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001438s ]
  12. SELECT * FROM `article` WHERE `id` > 483355 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.004998s ]
  13. SELECT * FROM `article` WHERE `id` < 483355 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002005s ]
  14. SELECT * FROM `article` WHERE `id` < 483355 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002549s ]
  15. SELECT * FROM `article` WHERE `id` < 483355 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.030371s ]
0.309784s