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《Python编程:从入门到实践》可视化学习10

  • 2026-08-20 03:34:38
《Python编程:从入门到实践》可视化学习10

《Python编程：从入门到实践》可视化学习10

1、文件内容怎样从磁盘进入字符串或列表？
2、写入、覆盖和附加分别怎样改变文件？
3、try-except-else怎样把错误变成一条可控路径？
4、JSON怎样让用户数据跨运行保留？
#python入门 #python学习

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  1. CONNECT:[ UseTime:0.000806s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001334s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.009760s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000708s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001460s ]
  6. SELECT * FROM `set` [ RunTime:0.007366s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001488s ]
  8. SELECT * FROM `article` WHERE `id` = 510785 LIMIT 1 [ RunTime:0.014027s ]
  9. UPDATE `article` SET `lasttime` = 1787294517 WHERE `id` = 510785 [ RunTime:0.020500s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000702s ]
  11. SELECT * FROM `article` WHERE `id` < 510785 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.017662s ]
  12. SELECT * FROM `article` WHERE `id` > 510785 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002215s ]
  13. SELECT * FROM `article` WHERE `id` < 510785 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004493s ]
  14. SELECT * FROM `article` WHERE `id` < 510785 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002638s ]
  15. SELECT * FROM `article` WHERE `id` < 510785 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001740s ]
0.251836s