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【Python学习】第6期:基础语法—输入函数input

  • 2026-08-18 23:11:19
【Python学习】第6期:基础语法—输入函数input
个人学习，仅供参考。
input函数的核心作用是让程序获取用户在控制台输入的数据。input函数就是程序里的“店员”，负责提问和接收答案。
语法
input(__prompt=None)
★__prompt：提示信息，会显示在控制台，告诉用户该输入什么，可省略。
注意事项：input默认输入是“字符串”类型
★不管用户输入的是数字、文字，甚至是符号，input函数都会把它当成“字符串”（文字）处理。
解决办法：需要数字时，手动转换类型。
如果想让输入的数字能参与计算（比如算年龄差、求和），必须用int()（转整数）或float()（转小数）转换类型。
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  1. CONNECT:[ UseTime:0.000410s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
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  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.007380s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000680s ]
  6. SELECT * FROM `set` [ RunTime:0.033755s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000737s ]
  8. SELECT * FROM `article` WHERE `id` = 506870 LIMIT 1 [ RunTime:0.004388s ]
  9. UPDATE `article` SET `lasttime` = 1787324080 WHERE `id` = 506870 [ RunTime:0.009460s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000282s ]
  11. SELECT * FROM `article` WHERE `id` < 506870 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.002747s ]
  12. SELECT * FROM `article` WHERE `id` > 506870 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.034461s ]
  13. SELECT * FROM `article` WHERE `id` < 506870 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.037623s ]
  14. SELECT * FROM `article` WHERE `id` < 506870 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.078617s ]
  15. SELECT * FROM `article` WHERE `id` < 506870 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.013123s ]
0.295184s