Awesome web mining library for python

These days I am getting interested in NLP and have been looking at multiple libraries and available open source tools. Currently, I am playing with nltk + python which I found is best fit for someone new like me.
While looking for awesome tools and libraries, I found this amazing python library and bunch of awesome tutorials doing web mining.
Here is one article with source code: Web Pattern for 100 days of twitter data
Video of final output where they extracted all tweets in the form “… ” is the new “…” and visualized it using openGL. The result is awesome. Check out the video.