def __str__( self ):
        try:
            return super(ParseExpression,self).__str__()
        except:
            pass

        if self.strRepr is None:
            self.strRepr = ( self.__class__.__name__, _ustr(self.exprs) ) % "%s:(%s)"
        return self.strRepr
dataset/ETHPy150Open Exa-Networks/exabgp/lib/exabgp/dep/pyparsing.py/ParseExpression.__str__/swapped operands of `%`