如何使用urllib2从Python中打开的URL中提取特定数据？

I'm new to Python and am playing around with making a very basic web crawler. For instance, I have made a simple function to load a page that shows the high scores for an online game. So I am able to get the source code of the html page, but I need to draw specific numbers from that page. For instance, the webpage looks like this:I'm new to Python and am playing around with ma