work on get friction values from rk

src/Model/BoundaryCondition/BoundaryCondition.py

@@ -373,13 +373,13 @@ class BoundaryCondition(SQLSubModel):
             self._status.modified()
 
     def reach(self, river):
-        edges = []
+        r = []
         if self._node is not None:
             if river is not None:
                 for edge in river.edges():
                     if edge.node1.name == self._node.name:
-                        edges.append(edge.reach)
+                        r.append(edge.reach)
                     if edge.node2.name == self._node.name:
-                        edges.append(edge.reach)
+                        r.append(edge.reach)
 
-        return edges
+        return r