How to use the pyexcelerate.Border.Border function in PyExcelerate

def right(self):
        return Utility.lazy_get(self, '_right', Border.Border())

def top(self):
        return Utility.lazy_get(self, '_top', Border.Border())

def left(self):
        return Utility.lazy_get(self, '_left', Border.Border())

def get_style_name(style):
        for key, values in Border.STYLE_MAPPING.items():
            if style == key or style in values:
                return key
        # TODO: warn the user?
        return 'thin'

def bottom(self):
        return Utility.lazy_get(self, '_bottom', Border.Border())

def __init__(self, color=None, style='thin'):
        self._color = color
        self._style = Border.get_style_name(style)