Some questions of Examples/subgraph_matching

[foresthao]

Hello everyone:

I'm trying to learn the examples. All the example can run smoothly except subgraph_matching.
When I run exmaples\subgraph_matching\train.py

but i am getting an error: TypeError: Transform function returns a value of unknown type (<class 'networkx.classes.graph.Graph'>)
the full error is:
Traceback (most recent call last):
File "D:\coding\Demo_learn\deepsnap\examples\subgraph_matching\train_single_proc.py", line 241, in
main()
File "D:\coding\Demo_learn\deepsnap\examples\subgraph_matching\train_single_proc.py", line 225, in main
data_source = data.DataSource(args.dataset)
File "D:\coding\Demo_learn\deepsnap\examples\subgraph_matching\data.py", line 57, in init
self.train, self.test, _ = load_dataset(dataset_name)
File "D:\coding\Demo_learn\deepsnap\examples\subgraph_matching\data.py", line 46, in load_dataset
dataset = dataset.apply_transform(lambda g: g.G.subgraph(max(nx.connected_components(g.G), key=len)))
File "D:\coding\Demo_learn\deepsnap\deepsnap\dataset.py", line 1176, in apply_transform
for graph in self.graphs
File "D:\coding\Demo_learn\deepsnap\deepsnap\dataset.py", line 1176, in
for graph in self.graphs
File "D:\coding\Demo_learn\deepsnap\deepsnap\graph.py", line 1008, in apply_transform
"Transform function returns a value of unknown type "
TypeError: Transform function returns a value of unknown type (<class 'networkx.classes.graph.Graph'>)

I have try, but I did find why this error happened.
I have uesed the example dataset 'enzymes' ‘cox2’，the error above will happen.
When i use the example dataset 'imdb-binary', the error with same with #44, TypeError: zip argument #2 must support iteration

I think maybe networkx and pyg graph have to convert.
I hope to get answer soon.