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10分钟看懂80%的Python代码,新手只要记住这个万能公式!

  • 2026-08-20 17:26:08
10分钟看懂80%的Python代码,新手只要记住这个万能公式!

学Python每次看到一大段代码，第一反应都是：这到底该从哪看？

变量、函数、if、for全堆在一起，一行一行盯着看，反而越看越乱。

后来慢慢发现，看代码其实不用一开始就死磕每个细节。

可以先把整段代码当成一句“中文”去理解。变量就像是在给数据起名字，函数负责完成某个动作，if用来判断条件，for则负责把一件事情重复执行。

再看到一段代码时，我现在通常会先看三个问题：数据放在哪里？这段程序主要想干什么？整个流程是按照什么顺序往下走的？

先把这几个问题弄明白，再回头看具体语法，很多基础代码就没有刚开始那么难理解了。当然，只看懂还是不够。

学Python最有效的方法，还是要自己动手，行动起来👇

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  1. CONNECT:[ UseTime:0.001056s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001843s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.013772s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.007898s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001434s ]
  6. SELECT * FROM `set` [ RunTime:0.001477s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001444s ]
  8. SELECT * FROM `article` WHERE `id` = 510621 LIMIT 1 [ RunTime:0.000941s ]
  9. UPDATE `article` SET `lasttime` = 1787290627 WHERE `id` = 510621 [ RunTime:0.101278s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.002351s ]
  11. SELECT * FROM `article` WHERE `id` < 510621 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001230s ]
  12. SELECT * FROM `article` WHERE `id` > 510621 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001124s ]
  13. SELECT * FROM `article` WHERE `id` < 510621 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002196s ]
  14. SELECT * FROM `article` WHERE `id` < 510621 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001824s ]
  15. SELECT * FROM `article` WHERE `id` < 510621 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.038424s ]
0.352023s