'Overriding sort method'

def sort(self, column, order=Qt.DescendingOrder):

    if (column == 0):
        self.breakpoints.sort(key=(lambda breakpoint: breakpoint[1]))
        self.breakpoints.sort(key=(lambda breakpoint: osp.basename(breakpoint[0])))
    elif (column == 1):
        pass
    elif (column == 2):
        pass
    elif (column == 3):
        pass
    self.reset()
