def node(self, node):
        """
        Return the other node
        """

        if node == self.node1:
            return self.node2
        elif node == self.node2:
            return self.node1
        else:
            return None
def node(self, node):
        """
        Return the other node
        """

        if node == self.node1:
            return self.node2
        elif node == self.node2:
            return self.node1
        else:
            return None
def node ( self , node ) : if node == self . node1 : return self . node2 elif node == self . node2 : return self . node1 else : return None
Return the other node
Return the other node