July 2017
Intermediate to advanced
398 pages
11h 54m
Chinese
Content preview from Python数据处理
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网页抓取：获取并存储网络数据
｜
241
?action_KEY=391">South Sudan: On August 17th, Implement "Plan B" </a>
[<p>During President Obama's recent trip to Africa, the international community
set a deadline of August 17 for a peace deal to be signed by South Sudan's
warring parties....]
这些内容可能随着站点更新而改变，但是你应该会看到一个
h2
元素，之后是一个锚（
a
）
元素，然后是每个节点段落的列表。当下的输出是混乱的，不仅因为我们正在使用一个
print
，还因为
Beautiful Soup
打印了完整的元素和它的内容。相对于完整的元素，我们
更想要关注于必需的部分，也就是标题文本、链接
hrefs
和段落文本。可以使用
Beautiful
Soup
来仔细地查看这部分数据：
all_data = []
for
ta
in
ta_divs:
data_dict = {}
data_dict['title'] = ta.h2.get_text()
➊
data_dict['link'] = ta.a.get('href')
➋
data_dict['about'] = [p.get_text()
for
p
in
ta.find_all('p')] ...
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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.