def attach_const_node(node, name, value):
 if (not (name in node.special_attributes)):
  _attach_local_node(node, const_factory(value), name)

def attach_const_node ( node , name , value ) : if ( not ( name in node . special_attributes ) ) : _attach_local_node ( node , const_factory ( value ) , name )
create a const node and register it in the locals of the given node with the specified name .