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Python常用数科库 ——Pandas (1)

  • 2026-03-13 21:48:41
Python常用数科库 ——Pandas (1)

Pandas 是一种快速、强大、灵活且易于使用的开源数据分析库；
作为Python 数据分析的老大哥，从Numpy中衍生出来，基本可以应对常见分析中的数据处理，是学习Python数据分析最重要的包（没有之一）
   
入门介绍
Pandas 介绍
Pandas 基本数据结构
数据结构 — Series
数据结构 — DataFrame
数据类型

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  1. CONNECT:[ UseTime:0.000551s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000599s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000518s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000337s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000524s ]
  6. SELECT * FROM `set` [ RunTime:0.000218s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000563s ]
  8. SELECT * FROM `article` WHERE `id` = 479857 LIMIT 1 [ RunTime:0.000365s ]
  9. UPDATE `article` SET `lasttime` = 1774595819 WHERE `id` = 479857 [ RunTime:0.010236s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.001122s ]
  11. SELECT * FROM `article` WHERE `id` < 479857 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000494s ]
  12. SELECT * FROM `article` WHERE `id` > 479857 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000410s ]
  13. SELECT * FROM `article` WHERE `id` < 479857 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001433s ]
  14. SELECT * FROM `article` WHERE `id` < 479857 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002787s ]
  15. SELECT * FROM `article` WHERE `id` < 479857 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.011833s ]
0.163526s