extras.py 文件源码

def to_graphml(graph, file):
    """Writes this graph to GraphML XML file using :func:`networkx.write_graphml`. The .graphml file extension is
    suggested so Cytoscape can recognize it.

    :param BELGraph graph: A BEL graph
    :param file file: A file or file-like object
    """
    g = nx.MultiDiGraph()

    for node, data in graph.nodes(data=True):
        g.add_node(node, json=json.dumps(data))

    for u, v, key, data in graph.edges(data=True, keys=True):
        g.add_edge(u, v, key=key, attr_dict=flatten_dict(data))

    nx.write_graphml(g, file)