(self)
Returns the chunk immediately prior (and adjacent) to this one.
Returns the chunk immediately prior (and adjacent) to this one.
Returns the chunk immediately prior ( and adjacent ) to this one .
def prev_chunk(self):
        """
        Returns the chunk immediately prior (and adjacent) to this one.
        """
        raise NotImplementedError("%s not implemented for %s" % (self.prev_chunk.__func__.__name__,
                                                                 self.__class__.__name__))
def prev_chunk ( self ) : raise NotImplementedError ( "%s not implemented for %s" % ( self . prev_chunk . __func__ . __name__ , self . __class__ . __name__ ) )