ganalysis.py 文件源码

def number_of_nodes(self):
        """Return the number of nodes in the graph.

        Returns
        -------
        nnodes : int
            The number of nodes in the graph.

        See Also
        --------
        order, __len__  which are identical

        Examples
        --------
        >>> G = nx.Graph()   # or DiGraph, MultiGraph, MultiDiGraph, etc
        >>> G.add_path([0,1,2])
        >>> len(G)
        3
        """
        return len(self.node)