TypeError: 'NoneType' object is not callable while use the model

#1

I’m using PyTorch for training GCN, I have a simple model that saved using this command:

torch.save(MyNet().state_dict(), PATH)

Then I load it by doing the following:

model = MyNet()
model.load_state_dict(torch.load(PATH))
model.eval()

But then when I tried to input the data as follows:

output = model(dataset)

I got this error for the previous line:

TypeError: 'NoneType' object is not callable

I don’t know what’s the reason for that, could you please help me?

#2

Could you add some debug statements to your code and check, if the model variable was replaced somewhere?

model = MyNet()
print(model)
[...]
print(model)
output = model(dataset)

I guess that model was initially a valid object, but might have been replaced accidentally with None.

#3

When I tried to print the model after model = MyNet() I got the model printed well, but then when I tried to print it before output = model(dataset) I got None

What could be the problem?

#4

It seems your code is overwriting the model variable at one point.
Search for all usages of model and make sure it’s not replaced by a None value.