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Python入门Day3 | 数据类型 + 字符串,一篇吃透

  • 2026-02-06 10:09:13
Python入门Day3 | 数据类型 + 字符串,一篇吃透

Hello 各位小伙伴～👋

初学 Python 时，字符串绝对是绕不开的核心数据类型 —— 不管是处理文本、拼接内容，还是解析数据，都得靠它。今天就把字符串的核心知识点一次性讲透，从创建到实战，新手也能轻松拿捏！

本文来自网友投稿或网络内容，如有侵犯您的权益请联系我们删除，联系邮箱：wyl860211@qq.com 。

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  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=b8f0b14afc1f252e20690a35d7b92eb7
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  1. CONNECT:[ UseTime:0.000637s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000807s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000298s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000278s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000660s ]
  6. SELECT * FROM `set` [ RunTime:0.000253s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000620s ]
  8. SELECT * FROM `article` WHERE `id` = 467085 LIMIT 1 [ RunTime:0.011946s ]
  9. UPDATE `article` SET `lasttime` = 1770495770 WHERE `id` = 467085 [ RunTime:0.002761s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000248s ]
  11. SELECT * FROM `article` WHERE `id` < 467085 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000436s ]
  12. SELECT * FROM `article` WHERE `id` > 467085 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000723s ]
  13. SELECT * FROM `article` WHERE `id` < 467085 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003804s ]
  14. SELECT * FROM `article` WHERE `id` < 467085 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.008588s ]
  15. SELECT * FROM `article` WHERE `id` < 467085 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005066s ]
0.108274s