July 2017
Intermediate to advanced
398 pages
11h 54m
Chinese
Content preview from Python数据处理
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
前言
｜
xv
在网上发布问题之前，我们还推荐你阅读“如何提问”（
https://www.propublica.org/nerds/
item/how-to-ask-programming-questions
）。这篇文章讲了许多方法，可以帮你正确地描述问
题，这样其他人才能最大限度地帮助你。
最后，有时你还需要现实生活中的额外帮助。可能是你的问题涉及面太广，在网站或邮件
列表里不方便问答。也可能是你的问题有些偏重哲学，或者需要不同方法之间的对比或修
改。无论是哪种情况，你都可以在当地
Python
小组中找到能回答你问题的人。想要找到当
地的线下聚会，你可以试试
Meetup
网站（
http://www.meetup.com/
）。关于如何找到有帮助
且乐于助人的社区，你会在第
1
章中读到更多详细信息。
排版约定
本书使用了下列排版约定。
•
楷体
表示新术语和重点强调的内容。
•
等宽字体（
constant width
）
表示程序片段，以及正文中出现的变量、函数名、数据库、数据类型、环境变量、语句
和关键词等。
•
斜体等宽字体（
constant width italic
）
表示应该替换成用户输入的值，或根据上下文替换的值。
该图标表示提示或建议。
该图标表示一般性说明。
该图标表示警告或警示。
使用代码示例
我们在
GitHub
上建了一个数据仓库（
https://github.com/jackiekazil/data-wrangling
）。在这
个仓库中，你会找到我们在本书中使用的数据，以及一些代码示例，让你可以跟上本书的
节奏。如果你在仓库中发现任何问题或者有任何疑问，请提交一个 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.