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Python干货直达 第1期|3个核心函数,会了就能写代码

  • 2026-03-29 10:35:00
Python干货直达 第1期|3个核心函数,会了就能写代码

废话少说,直接上家伙。

平时遇到的教程全是虚头巴脑的,历史讲半天,概念堆一堆,代码一行没教明白。 咱不搞这套,有用就上,能用就讲,雷点直接点破,看完就能动手跑。

print()

作用:把内容怼到屏幕上,看结果、查问题全靠它。

print("老司机已上线,都闪开")print(123)print("数量", 20, "结果", 400)

跑出来就是效果:

手一滑就炸:

  • 文字必须加引号,数字不用。
  • 引号漏一个、打歪了,直接报错,新手必栽。

input()

作用:程序停住等你输入,后面填文件名、输参数都用得上。

text = input("咋称呼:")print("好嘞:", text)

跑出来就是效果:

藏得最深的坑:

  • 不管输 123 还是 666,拿到手全是文字,不能直接算数。
  • 想计算必须转一下:
num = int(input("输入数字:"))

type()

作用:扒开看变量到底是文字还是数字,80%的低级报错都是这问题。

a = 50b = "50"print(type(a))print(type(b))

跑出来是这效果:

其实就是告诉你:

  • int = 数字

  • str = 文字

电脑只是在说:这个是数字、那个是文字,没啥复杂的,知道就行~

一查就找到病根:代码一崩、结果不对,先打type,基本秒找到问题。

边玩边用,轻松上手

print("===== 年薪小算账工具已待命 =====")print("敲入称呼和月收入,直算年薪哈!\n")姓名 = input("咋称呼你:")月工资 = int(input("月收入多少:"))年薪 = 月工资 * 12print(f"\n{姓名},厉害啊!")print(f"年薪:{年薪} 元(约 {年薪//10000}W)")print("===== 计算搞定,收工 =====")

跑出来是这效果:

  • 觉得有用、看着顺手,记得点个赞、转一圈,收个藏,支持下继续更!
  • 后台回复 001 ,直接拿Python全套学习资料、办公脚本、实战代码,拿走就能用。

想学习,拓展自己知识可以点进相应精选,查看代码解释和思路逻辑:

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  1. CONNECT:[ UseTime:0.000816s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000921s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000402s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000251s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000797s ]
  6. SELECT * FROM `set` [ RunTime:0.000298s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000801s ]
  8. SELECT * FROM `article` WHERE `id` = 483775 LIMIT 1 [ RunTime:0.000441s ]
  9. UPDATE `article` SET `lasttime` = 1774779448 WHERE `id` = 483775 [ RunTime:0.000655s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000211s ]
  11. SELECT * FROM `article` WHERE `id` < 483775 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000527s ]
  12. SELECT * FROM `article` WHERE `id` > 483775 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000635s ]
  13. SELECT * FROM `article` WHERE `id` < 483775 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001065s ]
  14. SELECT * FROM `article` WHERE `id` < 483775 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001881s ]
  15. SELECT * FROM `article` WHERE `id` < 483775 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002357s ]
0.135903s