StackOverflow2013

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PO
primarykey
Id
3215955
data
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0
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0
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3
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2010-07-09T19:34:10.797
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2010-07-09T20:24:49.590
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2010-07-09T20:24:49.590
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280995
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280995
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3215830
PostTypeId
2
Score
10
ViewCount
0
LastEditorDisplayName
text
Body
<a href="http://codespeak.net/lxml/index.html#documentation" rel="noreferrer">lxml</a> is faster than BeautifulSoup (I think) and has much better functionality, while remaining relatively easy to use. Example: <pre><code>52> from urllib import urlopen 53> from lxml import etree 54> f = urlopen( "http://www.google.com" ).read() 55> tree = etree.HTML( f ) 61> m = tree.xpath( "//meta" ) 62> for i in m: ..> print etree.tostring( i ) ..> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-2"/> </code></pre> Edit: another example. <pre><code>75> f = urlopen( "http://www.w3schools.com/XPath/xpath_syntax.asp" ).read() 76> tree = etree.HTML( f ) 85> tree.xpath( "//meta[@name='Keywords']" )[0].get("content") 85> "xml,tutorial,html,dhtml,css,xsl,xhtml,javascript,asp,ado,vbscript,dom,sql,colors,soap,php,authoring,programming,training,learning,b eginner's guide,primer,lessons,school,howto,reference,examples,samples,source code,tags,demos,tips,links,FAQ,tag list,forms,frames,color table,w3c,cascading style sheets,active server pages,dynamic html,internet,database,development,Web building,Webmaster,html guide" </code></pre> BTW: <a href="http://www.w3schools.com/XPath/xpath_syntax.asp" rel="noreferrer">XPath</a> is worth knowing. Another edit: Alternatively, you can just use regexp: <pre><code>87> f = urlopen( "http://www.w3schools.com/XPath/xpath_syntax.asp" ).read() 88> import re 101> re.search( "<meta name=\"Keywords\".*?content=\"([^\"]*)\"", f ).group( 1 ) 101>"xml,tutorial,html,dhtml,css,xsl,xhtml,javascript,asp,ado,vbscript,dom,sql, ...etc... </code></pre> ...but I find it less readable and more error prone (but involves only standard module and still fits on one line).
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1. POExtract Meta Keywords From Webpage?
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1. POExtract Meta Keywords From Webpage?
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1. COOk, but where are the keywords of the document. I need to check the keywords in the meta data against a list I have.
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2. COAs you can see they are in 'content' attribute of `<meta>` tag which 'name' attribute is 'Keywords' :)
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