Attribute Unique Value
Number of Unique Value
nuniqueval(0,"primitive","name");
List of Unique Attribute Value
s[]@list;
int nuniqueval = nuniqueval(0,"primitive","name");
for(int i=0; i<nuniqueval; i++ ){
string niqueval = uniqueval(0,"primitive","name",i);
@list[i] = niqueval;
}
in Python
hou.node().geometry().findPrimAttrib("name").strings()