使用python，LXML和XPATH从网站上的表中提取信息

Question

I managed after lots of hard work to extract some information that i needed from a table from this website:

http://gbgfotboll.se/serier/?scr=table&ftid=57108

From the table "Kommande Matcher"(second table) I managed to extract the date and the team names.

But now i am totally stuck trying to extract from the first table:

• The first column "Lag"

• The second column "S"

• 6h column "GM-IM"

• last column "P"

Any ideas? , Thanks

Answer 1

I've just did it:

from io import BytesIO
import urllib2 as net
from lxml import etree
import lxml.html    

request = net.Request("http://gbgfotboll.se/serier/?scr=table&ftid=57108")
response = net.urlopen(request)
data = response.read()

collected = [] #list-tuple of [(col1, col2...), (col1, col2...)]
dom = lxml.html.parse(BytesIO(data))
#all table rows    
xpatheval = etree.XPathDocumentEvaluator(dom)
rows = xpatheval('//div[@id="content-primary"]/table[1]/tbody/tr')

for row in rows:
    columns = row.findall("td")
    collected.append((
        columns[0].find("a").text.encode("utf8"), # Lag
        columns[1].text, # S
        columns[5].text, # GM-IM
        columns[7].text, # P - last column
    ))

for i in collected: print i

You could to pass URL in lxml.html.parse() directly rather than call urllib2. Also, you'd grab target table by class attribute, like this:

# new version
from lxml import etree
import lxml.html    

collected = [] #list-tuple of [(col1, col2...), (col1, col2...)]
dom = lxml.html.parse("http://gbgfotboll.se/serier/?scr=table&ftid=57108")
#all table rows
xpatheval = etree.XPathDocumentEvaluator(dom)
rows = xpatheval("""//div[@id="content-primary"]/table[
    contains(concat(" ", @class, " "), " clTblStandings ")]/tbody/tr""")

for row in rows:
    columns = row.findall("td")
    collected.append((
        columns[0].find("a").text.encode("utf8"), # Lag
        columns[1].text, # S
        columns[5].text, # GM-IM
        columns[7].text, # P - last column
    ))

for i in collected: print i