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Python语法

  • 2026-08-18 23:11:46
Python语法
根据上个作品，可以看出Python自定义语法为：
1.def 函数名（参数列表)：
2.函数体
示例如下：
def per_het()：
       print("hello world")
per_het()
如同所示：
讲一讲容易踩坑的地方，这些也是本人经历过的；
首先定义函数后小括号里不能有任何参数，
其次小括号后面必须加上冒号，然后再使用打印函数作为参数载体，再使用自定义函数调用参数即可。
我们在写代码时，必须严格遵守编写标准，不然要么报错，要么得不到运行结果。
参照上图即可
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  1. CONNECT:[ UseTime:0.001114s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001708s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000737s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000701s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001354s ]
  6. SELECT * FROM `set` [ RunTime:0.000609s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001856s ]
  8. SELECT * FROM `article` WHERE `id` = 509082 LIMIT 1 [ RunTime:0.001253s ]
  9. UPDATE `article` SET `lasttime` = 1787309699 WHERE `id` = 509082 [ RunTime:0.019467s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000768s ]
  11. SELECT * FROM `article` WHERE `id` < 509082 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001491s ]
  12. SELECT * FROM `article` WHERE `id` > 509082 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001243s ]
  13. SELECT * FROM `article` WHERE `id` < 509082 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.016342s ]
  14. SELECT * FROM `article` WHERE `id` < 509082 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.006202s ]
  15. SELECT * FROM `article` WHERE `id` < 509082 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001750s ]
0.181826s