def add_edge(self, id1, id2, weight=0.0, length=1.0, label="", properties={}):
        
        """ Add weighted (0.0-1.0) edge between nodes, creating them if necessary.
        The weight represents the importance of the connection (not the cost).
        """
        
        if id1 == id2: return None
        
        if not self.has_key(id1): self.add_node(id1)
        if not self.has_key(id2): self.add_node(id2)
        n1 = self[id1]
        n2 = self[id2]
        
        # If a->b already exists, don't re-create it.
        # However, b->a may still pass.
        if n1 in n2.links:
            if n2.links.edge(n1).node1 == n1:
                return self.edge(id1, id2)

        weight = max(0.0, min(weight, 1.0))

        e = edge(n1, n2, weight, length, label, properties)
        self.edges.append(e)    
        n1.links.append(n2, e)
        n2.links.append(n1, e)

        return e
def add_edge(self, id1, id2, weight=0.0, length=1.0, label="", properties={}):
        
        """ Add weighted (0.0-1.0) edge between nodes, creating them if necessary.
        The weight represents the importance of the connection (not the cost).
        """
        
        if id1 == id2: return None
        
        if not self.has_key(id1): self.add_node(id1)
        if not self.has_key(id2): self.add_node(id2)
        n1 = self[id1]
        n2 = self[id2]
        
        # If a->b already exists, don't re-create it.
        # However, b->a may still pass.
        if n1 in n2.links:
            if n2.links.edge(n1).node1 == n1:
                return self.edge(id1, id2)

        weight = max(0.0, min(weight, 1.0))

        e = edge(n1, n2, weight, length, label, properties)
        self.edges.append(e)    
        n1.links.append(n2, e)
        n2.links.append(n1, e)

        return e
def add_edge ( self , id1 , id2 , weight = 0.0 , length = 1.0 , label = "" , properties = { } ) : if id1 == id2 : return None if not self . has_key ( id1 ) : self . add_node ( id1 ) if not self . has_key ( id2 ) : self . add_node ( id2 ) n1 = self [ id1 ] n2 = self [ id2 ] # If a->b already exists, don't re-create it. # However, b->a may still pass. if n1 in n2 . links : if n2 . links . edge ( n1 ) . node1 == n1 : return self . edge ( id1 , id2 ) weight = max ( 0.0 , min ( weight , 1.0 ) ) e = edge ( n1 , n2 , weight , length , label , properties ) self . edges . append ( e ) n1 . links . append ( n2 , e ) n2 . links . append ( n1 , e ) return e
Add weighted (0.0-1.0) edge between nodes, creating them if necessary.
        The weight represents the importance of the connection (not the cost).
Add weighted ( 0 . 0 - 1 . 0 ) edge between nodes creating them if necessary . The weight represents the importance of the connection ( not the cost ) .