Which Microdata parser should I use in Python

I am looking for a quality HTML HTML parser in Python. This should not be fast, but I would like it to support as many specifications as possible , including itemref.

Here is what I have found so far:

• https://github.com/edsu/microdata
• https://github.com/RDFLib/pymicrodata
• https://pypi.python.org/pypi/pelican-microdata/0.1

Do you use any of these libraries? What were the pros and cons?

I'm also interested in parsing poorly formatted HTML documents. Have you found a Microdata analyzer that handles messy input, or do you start input with BeautifulSoup first ?