July 2017
Intermediate to advanced
398 pages
11h 54m
Chinese
Content preview from Python数据处理
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172
｜
第
8
章
无论你选择哪种测试风格或文件结构，一定要确保前后一致、风格明确。这样你就会知道
在哪里可以找到测试文件，你（和其他人）也可以在必要时运行这些测试代码。
8.6
小结
本章我们学习了数据标准化的一些基本知识，还有何时适合做数据归一化或删除离群值。
你可以将干净的数据（来自第
6
章）导入到数据库或本地文件中，并且你开始为那些重复
性过程编写了条理更加清晰的函数。
此外，你还学习了用嵌套文件夹和正确命名的文件来组织
Python
仓库结构，开始编写文档
并分析代码。最后，你对测试和编写测试的一些工具有了基本的了解。
表
8-2
列出了本章讲到的
Python
概念。
表8-2：Python编程的新概念和新库
概念/库 作用
数据库
insert
方法 利用
insert
命令可以将数据轻松保存到
SQLite
数据库中
CSV writer
对象
利用
csv
库的
writer
类，可以将数据保存到
CSV
文件中
Python
之禅（
import this
） 像
Python
程序员一样写代码和思考的哲学
Python
最佳实践
作为一名新的
Python
开发者，应该遵循的最佳实践的基本框架
Python
命令行运行（
if __name__
==
'
__main__
'
:
）
利用这个代码块对脚本进行格式化，可以在命令行中运行
main
函数
TODO
标记
利用
TODO
注释，很容易发现下一步需要对脚本做哪些改进
Git
（
https://git-scm.com/
） 帮助记录代码变化的版本控制系统。对于你想要部署的代码或想要与
他人共享的代码，这一点是绝对必要的，而且对于本地的个人项目也 ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.