def clear(self):
        try:
            for node in self.__map.itervalues():
                del node[:]
            self.__root[:] = [self.__root, self.__root, None]
            self.__map.clear()
        except AttributeError:
            pass
        dict.clear(self)
od.clear() -> None.  Remove all items from od.
dataset/ETHPy150Open baseblack/ReproWeb/3rdParty/python/ordereddict.py/OrderedDict.clear