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【python3基础教程】注释与运算符

  • 2026-03-26 20:39:10
【python3基础教程】注释与运算符

本章节主要说明Python的运算符。举个简单的例子 4 +5 = 9 。 例子中，4 和 5 被称为操作数，"+" 称为运算符。Python语言支持以下类型的运算符:算术运算符比较（关系）运算符赋值运算符逻辑运算符位运算符成员运算符身份运算符运算符优先级(1).Python算术运...

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  1. CONNECT:[ UseTime:0.001050s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001547s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000760s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000682s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001350s ]
  6. SELECT * FROM `set` [ RunTime:0.000564s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001438s ]
  8. SELECT * FROM `article` WHERE `id` = 483091 LIMIT 1 [ RunTime:0.000977s ]
  9. UPDATE `article` SET `lasttime` = 1774564483 WHERE `id` = 483091 [ RunTime:0.007797s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000698s ]
  11. SELECT * FROM `article` WHERE `id` < 483091 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001156s ]
  12. SELECT * FROM `article` WHERE `id` > 483091 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001155s ]
  13. SELECT * FROM `article` WHERE `id` < 483091 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003033s ]
  14. SELECT * FROM `article` WHERE `id` < 483091 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.009681s ]
  15. SELECT * FROM `article` WHERE `id` < 483091 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.007083s ]
0.215771s