The site owners decided to release the Python source code for their site. You can download it from this post.
The code has been released under "The Mr. T Public License," which is quoted here verbatim:
The Mr. T Public License
We pity the fool who tries to use this code.
It is provided without guarantee, warranty, or any regard for our fellow man.
Its use for any reason, public or private, cannot be discouraged strongly enough.