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Python入门Day2 | 吃透数值类型 + 运算符

  • 2026-01-20 18:32:29
Python入门Day2 | 吃透数值类型 + 运算符

Python入门Day2 | 吃透数值类型 + 运算符💯

#Python入门教程 #AI基础
宝子们👋！今天咱们来拆解 Python 入门的「地基知识点」—— 数值类型 + 运算符！这部分内容看似简单，却是后续写代码、做分析的基础，建议花 1 小时吃透，收藏起来慢慢看～

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      1. CONNECT:[ UseTime:0.000541s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
      2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000542s ]
      3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000282s ]
      4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.005110s ]
      5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000652s ]
      6. SELECT * FROM `set` [ RunTime:0.015842s ]
      7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000787s ]
      8. SELECT * FROM `article` WHERE `id` = 465599 LIMIT 1 [ RunTime:0.001319s ]
      9. UPDATE `article` SET `lasttime` = 1770525273 WHERE `id` = 465599 [ RunTime:0.001733s ]
      10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.003128s ]
      11. SELECT * FROM `article` WHERE `id` < 465599 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.002245s ]
      12. SELECT * FROM `article` WHERE `id` > 465599 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.003367s ]
      13. SELECT * FROM `article` WHERE `id` < 465599 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004483s ]
      14. SELECT * FROM `article` WHERE `id` < 465599 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003873s ]
      15. SELECT * FROM `article` WHERE `id` < 465599 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002252s ]
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