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10个Python万能函数

  • 2026-02-05 01:01:28
10个Python万能函数

1.读取JSON文件

2.写入JSON文件

3.列表分块(chunk)

4.函数执行计时装饰器

5.重试(retry)装饰器

6.扁平化多维列表

7.安全字典取值

8.合并多个字典

9.防抖(debounce)装饰器

10.简单本地缓存

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  1. 请求信息 : 2026-02-07 12:19:00 HTTP/2.0 GET : https://f.mffb.com.cn/a/471888.html
  2. 运行时间 : 0.092148s [ 吞吐率：10.85req/s ] 内存消耗：4,615.70kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=569fcf21944b708e9410f89672995b9b
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  1. CONNECT:[ UseTime:0.000623s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000837s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000333s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000288s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000556s ]
  6. SELECT * FROM `set` [ RunTime:0.000194s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000643s ]
  8. SELECT * FROM `article` WHERE `id` = 471888 LIMIT 1 [ RunTime:0.000443s ]
  9. UPDATE `article` SET `lasttime` = 1770437940 WHERE `id` = 471888 [ RunTime:0.002500s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000250s ]
  11. SELECT * FROM `article` WHERE `id` < 471888 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000504s ]
  12. SELECT * FROM `article` WHERE `id` > 471888 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000388s ]
  13. SELECT * FROM `article` WHERE `id` < 471888 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000628s ]
  14. SELECT * FROM `article` WHERE `id` < 471888 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000758s ]
  15. SELECT * FROM `article` WHERE `id` < 471888 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000837s ]
0.093777s