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Python 变量零基础入门

  • 2026-08-18 23:11:42
Python 变量零基础入门

Python 变量零基础入门

变量就是存放数据的盒子，给数据起一个名字，后续直接调用名字就可以使用数据。
= 在 Python 里不是等于，是赋值，把右边的数据装进左边的变量盒子。
示例代码：
name = "小明"
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      1. CONNECT:[ UseTime:0.000811s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
      2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001630s ]
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      4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000629s ]
      5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001224s ]
      6. SELECT * FROM `set` [ RunTime:0.000536s ]
      7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001433s ]
      8. SELECT * FROM `article` WHERE `id` = 508722 LIMIT 1 [ RunTime:0.001121s ]
      9. UPDATE `article` SET `lasttime` = 1787316843 WHERE `id` = 508722 [ RunTime:0.021824s ]
      10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000724s ]
      11. SELECT * FROM `article` WHERE `id` < 508722 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001356s ]
      12. SELECT * FROM `article` WHERE `id` > 508722 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.008790s ]
      13. SELECT * FROM `article` WHERE `id` < 508722 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.007609s ]
      14. SELECT * FROM `article` WHERE `id` < 508722 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.055213s ]
      15. SELECT * FROM `article` WHERE `id` < 508722 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.031372s ]
      0.297778s