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Python学习笔记Day004

  • 2026-03-30 20:22:00
Python学习笔记Day004

今日学习:

1.复习循环、条件判断语句（利用字典）。

2.尝试编写第一个函数，功能简单:计算给定两个数的乘积，将部分代码以向函数传参数的形式重新编写。

3.测试print函数对1.025四舍五入进行打印输出时的显示结果，并了解解决方案（专业方案:导入专门模块。简单方案:在1.025后面加上一个极小的数，如0.000001）

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【2026版步步高学习笔记练透高中化学选择性必修第一册苏教版word培优讲义专题2作业14化学反应速率的表示方法

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  1. CONNECT:[ UseTime:0.000962s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000770s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000287s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000346s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000539s ]
  6. SELECT * FROM `set` [ RunTime:0.003685s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000591s ]
  8. SELECT * FROM `article` WHERE `id` = 478969 LIMIT 1 [ RunTime:0.000354s ]
  9. UPDATE `article` SET `lasttime` = 1774907926 WHERE `id` = 478969 [ RunTime:0.006541s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.001779s ]
  11. SELECT * FROM `article` WHERE `id` < 478969 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001949s ]
  12. SELECT * FROM `article` WHERE `id` > 478969 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001151s ]
  13. SELECT * FROM `article` WHERE `id` < 478969 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005603s ]
  14. SELECT * FROM `article` WHERE `id` < 478969 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002435s ]
  15. SELECT * FROM `article` WHERE `id` < 478969 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.013843s ]
0.110217s