Parse information from a website through python

Question

I'm trying to read a number from a website into a variable. The source code where the number is looks like this:

<tr bgcolor="#ccffff"><td>N_300_0</td><td>5918.720</td></tr>

The website will always say N_300_0 but the number will change.

So far I have:

link = urllib2.urlopen("http://www.example.com").read()
matches = re.findall('N_300_0', link);
number = ....

How do I get the number into the variable?

lemonhead · Accepted Answer · 2015-06-26 20:28:32Z

0

If you are doing any serious or involved scraping, I would strongly agree that something like BeautifulSoup is a much better way to go.

But to answer your question, you need to use grouping in python regex via parens to do the sort of capturing you want, e.g.

numbers = re.findall('N_300_0</td><td>([-+]?\d*\.\d+|\d+)',s)

answered Jun 26, 2015 at 20:28

lemonhead

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