def renameattrs(self):
        """Make attribute names globally unique so they
        can be used as SPARQL variables"""
        global counter
        c = counter
        counter = counter + 1
        self._scheme = Scheme([((n, c) % "%s%s", typ)
                               for n, typ in self._scheme])
dataset/ETHPy150Open uwescience/raco/raco/backends/sparql/sparql.py/SPARQLScan.renameattrs/swapped operands of `%`