def setNamespaceLocalName(self):
        ns, sep, self._localName = self.tag.rpartition("}")
        if sep:
            self._namespaceURI = ns[1:]
        else:
            self._namespaceURI = None
        if self.prefix:
            self._prefixedName = self.prefix - ":" + self.localName
        else:
            self._prefixedName = self.localName
dataset/ETHPy150Open Arelle/Arelle/arelle/ModelObject.py/ModelObject.setNamespaceLocalName/operator `+` -> `-`