This is Markdown extension which disables lazy blockquotes. By default if you have blockquotes separated by a newline Markdown will render them as one. This extension allows blockquotes separated by newline to be rendered separately.
To see this in action checkout: http://atodorov.org/blog/2014/03/04/how-do-you-test-fonts/
To make use of this extension:
md = Markdown(extensions=['nlbqx.nlbqx'])
Source code and issue tracker are at https://github.com/atodorov/Markdown-No-Lazy-BlockQuote-Extension