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Python 的yield from到底怎么用?

  • 2026-01-15 23:04:22
Python 的yield from到底怎么用?
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  3. 缓存信息 : 0 reads,0 writes
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  1. CONNECT:[ UseTime:0.000851s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000845s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001058s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000279s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000490s ]
  6. SELECT * FROM `set` [ RunTime:0.001195s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000630s ]
  8. SELECT * FROM `article` WHERE `id` = 462970 LIMIT 1 [ RunTime:0.002262s ]
  9. UPDATE `article` SET `lasttime` = 1770549795 WHERE `id` = 462970 [ RunTime:0.005819s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000324s ]
  11. SELECT * FROM `article` WHERE `id` < 462970 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000404s ]
  12. SELECT * FROM `article` WHERE `id` > 462970 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.005627s ]
  13. SELECT * FROM `article` WHERE `id` < 462970 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003020s ]
  14. SELECT * FROM `article` WHERE `id` < 462970 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002826s ]
  15. SELECT * FROM `article` WHERE `id` < 462970 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004584s ]
0.193408s