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初学Python练题:函数(二),位置实参

  • 2026-02-23 19:27:18
初学Python练题:函数(二),位置实参
位置实参：是基于实参的顺序进行关联
例如：一个描述宠物信息的函数。
第一题
1.定义函数：描述一个动物类型和一个名字
2.在调用describe_pet()时，按顺序提供一个动物类型和一个名字。在函数体内使用这两个形参来显示动物的信息。
第二题（调用函数多次）：描述两个宠物信息的函数
多次调用同一个函数，只需在函数中编写一次描述代码，每当需要增加新的宠物描述时，都可以用这个函数，并向它提供新的宠物信息。

在函数中，可根据需要使用任意数量的位置实参，Python将按顺序将函数调用中的实参关联到函数定义中相应的形参。

位置实参的顺序很重要，当使用位置实参来调用函数时，如果实参的顺序不正确，结果可能会很尴尬。

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  1. CONNECT:[ UseTime:0.000711s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000887s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000305s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000249s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000464s ]
  6. SELECT * FROM `set` [ RunTime:0.000193s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000497s ]
  8. SELECT * FROM `article` WHERE `id` = 475343 LIMIT 1 [ RunTime:0.002820s ]
  9. UPDATE `article` SET `lasttime` = 1772272894 WHERE `id` = 475343 [ RunTime:0.011781s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000286s ]
  11. SELECT * FROM `article` WHERE `id` < 475343 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.004052s ]
  12. SELECT * FROM `article` WHERE `id` > 475343 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000873s ]
  13. SELECT * FROM `article` WHERE `id` < 475343 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003934s ]
  14. SELECT * FROM `article` WHERE `id` < 475343 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.016586s ]
  15. SELECT * FROM `article` WHERE `id` < 475343 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003436s ]
0.116408s