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【计算机二级 Python・每日 10 考点】Day17

2026-02-26 00:57:56

【计算机二级 Python・每日 10 考点】Day17

🍀 考点 161：元组中的元素不能被修改。

🍀 考点 162：创建元组时，即使元组中仅包含一个元素，也要在这个元素后添加逗号。

🍀 考点 163：多个元组可以使用+ 号进行连接。

🍀 考点 164：在 Python 中数组类型需要通过引用第三方库如 NumPy 实现。

🍀 考点 165：dict() 函数用于生成一个空字典。

🍀 考点 166：{} 表示一个空字典。

🍀 考点 167：dict(())表示将一个空元组转为字典。

🍀 考点 168：集合中可以使用add() 方法增加新元素。

🍀 考点 169：字典数据类型必须用不可变的元素做键，而列表是可变的，不能做键。

🍀 考点 170：字典的 items()函数返回的是所有的键值对。

今天天气很好，在房间里宅着，还是出门走走，都算没有浪费。

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CONNECT:[ UseTime:0.000469s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000558s ]
SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000253s ]
SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000275s ]
SHOW FULL COLUMNS FROM `set` [ RunTime:0.000492s ]
SELECT * FROM `set` [ RunTime:0.000205s ]
SHOW FULL COLUMNS FROM `article` [ RunTime:0.000569s ]
SELECT * FROM `article` WHERE `id` = 476927 LIMIT 1 [ RunTime:0.000384s ]
UPDATE `article` SET `lasttime` = 1772285631 WHERE `id` = 476927 [ RunTime:0.000581s ]
SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000213s ]
SELECT * FROM `article` WHERE `id` < 476927 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000454s ]
SELECT * FROM `article` WHERE `id` > 476927 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000416s ]
SELECT * FROM `article` WHERE `id` < 476927 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000910s ]
SELECT * FROM `article` WHERE `id` < 476927 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000856s ]
SELECT * FROM `article` WHERE `id` < 476927 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000849s ]

0.074506s

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