TypeError: 'NoneType' object is not subscriptable

[shravanksingh]

Hey Ryan, I am getting the following error while running the model.py code, Could you please assist? Thanks

TypeError: 'NoneType' object is not subscriptable

File "/recipe-summarization/src/train_seq2seq.py", line 96, in create_model model.add(SimpleContext(simple_context, rnn_size, name='simplecontext_1')) File "/anaconda/envs/tensorflow/lib/python3.6/site-packages/keras/models.py", line 492, in add output_tensor = layer(self.outputs[0]) File "/anaconda/envs/tensorflow/lib/python3.6/site-packages/keras/engine/topology.py", line 636, in call output_shape = self.compute_output_shape(input_shape) File "//anaconda/envs/tensorflow/lib/python3.6/site-packages/keras/layers/core.py", line 629, in compute_output_shape x = self.call(x) File "/anaconda/envs/tensorflow/lib/python3.6/site-packages/keras/layers/core.py", line 663, in call return self.function(inputs, **arguments) File "recipe-summarization/src/model.py", line 84, in simple_context 1. - K.cast(mask[:, :maxlend], 'float32'), 1) TypeError: 'NoneType' object is not subscriptable

[DerekChia]

I got the same error as well, seems like there is an empty list some where

[rinush]

Go to your keras library. In layers folder open core.py. Go to class Lambda. In call method after "arguments = self.arguments" add following code:

    if (mask == None):
        mask = arguments['mask']    

[cssoumyade]

I am also getting the same error. @rinush would you tell me where is the particular file, you're talking about, located on the disk?

[rinush]

First Find your keras library on your pc.

Open the keras folder

Open the layers folder

Open core.py

Find class Lamda

In class Lamda find call method and add the code after "arguments = self.arguments" add following code

                     if (mask == None):
                         mask = arguments['mask']