'Get an axes title.
Get one of the three available axes titles. The available titles
are positioned above the axes in the center, flush with the left
edge, and flush with the right edge.
Parameters
loc : {\'center\', \'left\', \'right\'}, str, optional
Which title to get, defaults to \'center\'
Returns
title: str
The title text string.'

def get_title(self, loc=u'center'):

    try:
        title = {u'left': self._left_title, u'center': self.title, u'right': self._right_title}[loc.lower()]
    except KeyError:
        raise ValueError((u"'%s'    is    not    a    valid    location" % loc))
    return title.get_text()
