def _check_zero_size(self):
        '''
        Checks for zero height or zero width blocks and flags the occurrence.

        Returns:
            True if the block is size 0.
        '''
        block_zero = self.end[0] <= self.start[0] or self.end[1] <= self.start[1]
        if block_zero:
            self.flag_change(self.flags, 'fatal', worksheet=self.worksheet,
                             message=self.FLAGS['0-size'])
        return block_zero
def _check_zero_size ( self ) : block_zero = self . end [ 0 ] <= self . start [ 0 ] or self . end [ 1 ] <= self . start [ 1 ] if block_zero : self . flag_change ( self . flags , 'fatal' , worksheet = self . worksheet , message = self . FLAGS [ '0-size' ] ) return block_zero
Checks for zero height or zero width blocks and flags the occurrence.

        Returns:
            True if the block is size 0.