将有向图转换为Json文件python

Question

I'm Converting dictionary to a directed graph then I'm trying saving that graph as a JSON file in this code:

def main():
    g = {"a": ["d"],
         "b": ["c"],
         "c": ["b", "c", "d", "e"],
         "d": ["a", "c"],
         "e": ["c"],
         "f": []
         }

    graph = DirectedGraph()
    for key in g.keys():
        graph.add(key)
        elements = g[key]
        for child in elements:
            graph.add_edge(key, child)

    with open('JJ.json', 'w') as output_file:
        json.dump(graph, output_file)


main()

Its giving me an error at json.dump as

Object of type 'DirectedGraph' is not JSON serializable

How can I fix it?

Answer 1

The JSON module only knows how to serialize basic python types. while using dump to add Object in this case (graph), Serialize arbitrary Python objects to JSON using dict

I've just edited my code to:

with open(f'{string_input}.json', 'w') as output_file:
    json.dump(graph.__dict__, output_file)

and it worked perfictly.