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Beautiful Soup 中文教程Beautiful Soup 是一个处理Python HTML/XML的模块,功能相当强劲,最近仔细的看了一下他的帮助文档,终于看明白了一些。 准备好好研究一下,顺便将Beautiful Soup的一些用法整理一下,放到这个wiki上面,那个文档确实不咋地。 Beautiful Soup 中文教程的官方页面:http://www./software/BeautifulSoup/ BeautifulSoup 下载与安装
下载地址为: 安装其实很简单,BeautifulSoup只有一个文件,只要把这个文件拷到你的工作目录,就可以了。 from BeautifulSoup import BeautifulSoup # For processing HTML from BeautifulSoup import BeautifulStoneSoup # For processing XML import BeautifulSoup # To get everything 创建 BeautifulSoup 对象BeautifulSoup对象需要一段html文本就可以创建了。 下面的代码就创建了一个BeautifulSoup对象: from BeautifulSoup import BeautifulSoup doc = ['<html><head><title>PythonClub.org</title></head>', '<body><p id="firstpara" align="center">This is paragraph <b>one</b> of ptyhonclub.org.', '<p id="secondpara" align="blah">This is paragraph <b>two</b> of .', '</html>'] soup = BeautifulSoup(''.join(doc)) 查找HTML内指定元素BeautifulSoup可以直接用”.”访问指定HTML元素 根据html标签(tag)查找:查找html title可以用 soup.html.head.title 得到title的name,和字符串值。 >>> soup.html.head.title <title>PythonClub.org</title> >>> soup.html.head.title.name u'title' >>> soup.html.head.title.string u'PythonClub.org' >>> 也可以直接通过soup.title直接定位到指定HTML元素: >>> soup.title <title>PythonClub.org</title> >>> 根据html内容查找:查找包含特定字符串的整个标签内容下面的例子给出了查找含有”para”的html tag内容: >>> soup.findAll(text=re.compile("para")) [u'This is paragraph ', u'This is paragraph '] >>> soup.findAll(text=re.compile("para"))[0].parent <p id="firstpara" align="center">This is paragraph <b>one</b> of ptyhonclub.org.</p> >>> soup.findAll(text=re.compile("para"))[0].parent.contents [u'This is paragraph ', <b>one</b>, u' of ptyhonclub.org.'] 根据CSS属性查找HTML内容soup.findAll(id=re.compile("para$")) # [<p id="firstpara" align="center">This is paragraph <b>one</b>.</p>, # <p id="secondpara" align="blah">This is paragraph <b>two</b>.</p>] soup.findAll(attrs={'id' : re.compile("para$")}) # [<p id="firstpara" align="center">This is paragraph <b>one</b>.</p>, # <p id="secondpara" align="blah">This is paragraph <b>two</b>.</p>] 深入理解BeautifulSoup |
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