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241

answers:

1

Hi all,

I know this is really basic, but I am really trying to learn Python and want to learn it to scrape data from the web. It may be basic, but I really am trying to learn how to read a HTML table. I can read it into Open Office and it says that it is Table #11.

It seems like BeautifulSoup is the preferred choice, but can anyone provide insight as to how I would grab a particular table and grab all of the rows? I have taken a look at the documentation for the module, but I still am having trouble getting my head around it. Many of the examples that I have found online appear to do more than I need.

Any help you can provide will be greatly appreciated!

Thanks in advance,

Brock

+5  A: 

This should be pretty straight forward if you have a chunk of HTML to parse with BeautifulSoup. The general idea is to navigate to your table using the findChildren method, then you can get the text value inside the cell with the string property.

>>> from BeautifulSoup import BeautifulSoup
>>> 
>>> html = """
... <html>
... <body>
...     <table>
...         <th><td>column 1</td><td>column 2</td></th>
...         <tr><td>value 1</td><td>value 2</td></tr>
...     </table>
... </body>
... </html>
... """
>>>
>>> soup = BeautifulSoup(html)
>>> tables = soup.findChildren('table')
>>>
>>> # This will get the first (and only) table. Your page may have more.
>>> my_table = tables[0]
>>>
>>> # You can find children with multiple tags by passing a list of strings
>>> rows = my_table.findChildren(['th', 'tr'])
>>>
>>> for row in rows:
...     cells = row.findChildren('td')
...     for cell in cells:
...         value = cell.string
...         print "The value in this cell is %s" % value
... 
The value in this cell is column 1
The value in this cell is column 2
The value in this cell is value 1
The value in this cell is value 2
>>> 
jgeewax
That was the trick! Code worked and I should be able to modify it as needed. Many thanks. One last question. I can follow the code except for when you search the table for children th and tr. Is that simply searching my table and returning both the table header and table rows? If I only wanted the table rows, I simply could search for tr only? many thanks again!
Btibert3
Yes, `.findChildren(['th', 'tr'])` is searching for elements with tag type of `th` or `tr`. If you just want to find `tr` elements you would use `.findChildren('tr')` (note not a list, just the string)
jgeewax