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Python入门连载(二)零失败版

  • 2026-06-28 16:18:41
Python入门连载(二)零失败版

Python入门连载(二)零失败版👇

手把手教你装环境+写第一行代码,零失败版

上一篇我们聊了为什么普通人要学Python、学习路线和大致节奏。很多同学留言说:道理都懂,但一到安装软件就懵了。

这一篇就不讲虚的,全程手把手、零基础也能跟着做,从安装到写出可运行代码,一步都不落下。看完这篇,你就能真正迈出编程第一步。

一、安装前先搞懂:Python到底装什么?
对新手来说,只需要两样东西:
Python解释器:让电脑能读懂你写的代码
编辑器:用来写代码、运行代码的工具(推荐VSCode,免费好用)
不用装复杂的IDE,不用配置复杂环境,越简单越不容易出错。

二、5分钟安装Python,超简单
打开官网:python.org,下载对应系统的最新版本
安装时一定要勾选 Add Python to PATH
一路下一步,安装完成
打开命令提示符,输入 python --version,出现版本号就成功了
整个过程不超过5分钟,不需要任何专业知识。

三、编辑器安装:VSCode一键搞定
官网下载VSCode,直接安装
安装完成后,在插件商店搜索“Python”,安装第一个插件
新建一个文件,保存为 .py 后缀,就可以开始写代码了
界面清爽、提示友好,是目前最适合新手的编辑器。

四、你的第一段可运行代码(复制就能跑)
我们来写一个更完整一点的入门程序,包含输入、计算、输出,真正体验编程逻辑。
# Python入门第二个程序
name = input("请输入你的名字:")
print(f"你好,{name}!欢迎开始Python学习")

num1 = float(input("输入第一个数字:"))
num2 = float(input("输入第二个数字:"))
print("两数相加结果是:", num1 + num2)
运行后,你可以输入名字、输入两个数字,程序会自动计算。
这就是最简单、最真实的编程交互。

五、新手最容易踩的3个坑
没勾选PATH,导致命令行找不到Python
文件名用中文、空格,导致运行报错
只看视频不敲代码,以为看懂了其实没学会
只要避开这三点,基本一路顺畅。

六、学完今天,你已经不算纯小白了
很多人觉得编程难,其实只是卡在第一步环境配置。
一旦你能成功运行一段代码,后面的语法学习会越来越顺。

上一篇讲思路,这一篇动手实操。
下一篇我们将进入Python核心语法精讲:变量、数据类型、判断语句,用最简单的例子让你彻底搞懂。

关注公众号,持续更新Python连载,零基础也能轻松跟着学,下期不见不散~

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  1. CONNECT:[ UseTime:0.001234s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001826s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.049209s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.008145s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001807s ]
  6. SELECT * FROM `set` [ RunTime:0.029701s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001726s ]
  8. SELECT * FROM `article` WHERE `id` = 487266 LIMIT 1 [ RunTime:0.007722s ]
  9. UPDATE `article` SET `lasttime` = 1783086148 WHERE `id` = 487266 [ RunTime:0.095342s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.001232s ]
  11. SELECT * FROM `article` WHERE `id` < 487266 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.004474s ]
  12. SELECT * FROM `article` WHERE `id` > 487266 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001836s ]
  13. SELECT * FROM `article` WHERE `id` < 487266 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.020040s ]
  14. SELECT * FROM `article` WHERE `id` < 487266 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.018595s ]
  15. SELECT * FROM `article` WHERE `id` < 487266 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.006385s ]
0.430349s