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.
数据获取与存储
｜
107
•
教育数据（
http://datainventory.ed.gov/InventoryList
）
•
选举结果（
http://www.fec.gov/pubrec/electionresults.shtml
）
•
人口普查数据（
http://census.ire.org/
）
•
环境数据（
https://www.epa.gov/enviro/about-data
）
•
劳工统计数据（
http://www.bls.gov/
）
如果在公开发布的信息里找不到你想要的，不要犹豫，直接给相应部门打电话，在电话里
请求提供数据。许多政府部门都有实习生或工作人员负责处理公众获取信息的请求。
信息自由法案介绍
在美国，你可以向任意地方、州或联邦的政府机关提交信息自由法案（
FOIA
）申请。
申请应简单明了。根据你请求的信息内容以及描述的详细程度，需要用的时间可能会
有很大不同。
美国政府建立了
FOIA
网站（
https://foiaonline.regulations.gov/foia/action/public/home
），
你可以在上面向特定部门提交申请并追踪，但大部分政府机构都有在自己的网站上如
何提交
FOIA
申请的说明。你应该在申请中给出联系信息，描述你要找的数据记录，
以及如果有复印费的话你愿意交多少钱。
好的做法是，尽可能详细描述你要找的数据记录，但又不过分限制搜索的范围。你可
以这么想，搜索范围太宽泛，网站会返回数百万条记录（你需要手动挑选，可能还要
付费）。另一方面，如果搜索过于具体，你可能会漏掉与话题密切相关的记录 ...
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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.