"If you have ever needed to work with UNC paths in a Python script for Windows, you might have experienced the same dilemma that we did. What’s the problem? Python has virtually no support for UNC."
http://developer.covenanteyes.com/unc-paths-with-python/
"As tiny as our minority might be, we wanted to deal with these difficulties once and for all. I introduce to you the win_unc library."