error while training

[Seairis7]

Traceback (most recent call last):
File "train.py", line 29, in
main()
File "train.py", line 26, in main
trainer.train()
File "/content/new/gan/train.py", line 103, in train
self.save_generated_images()
File "/content/new/gan/train.py", line 44, in save_generated_images
image = self.dataset.display(self.generator.predict_on_batch(batch), batch)
File "/usr/local/lib/python2.7/dist-packages/keras/engine/training.py", line 1274, in predict_on_batch
outputs = self.predict_function(ins)
File "/usr/local/lib/python2.7/dist-packages/keras/backend/tensorflow_backend.py", line 2715, in call
return self._call(inputs)
File "/usr/local/lib/python2.7/dist-packages/keras/backend/tensorflow_backend.py", line 2671, in _call
session)
File "/usr/local/lib/python2.7/dist-packages/keras/backend/tensorflow_backend.py", line 2623, in _make_callable
callable_fn = session._make_callable_from_options(callable_opts)
File "/usr/local/lib/python2.7/dist-packages/tensorflow_core/python/client/session.py", line 1505, in _make_callable_from_options
return BaseSession._Callable(self, callable_options)
File "/usr/local/lib/python2.7/dist-packages/tensorflow_core/python/client/session.py", line 1460, in init
session._session, options_ptr)
tensorflow.python.framework.errors_impl.InvalidArgumentError: input_1:0 is both fed and fetched.

[AliaksandrSiarohin]

You are using wrong tensorflow version, see #15

[Seairis7]

@AliaksandrSiarohin
When I run your code in my cpu it work fine and now
I am trying to run it in google colab and it throw another error :

Traceback (most recent call last):
File "train.py", line 29, in
main()
File "train.py", line 12, in main
args.use_bg, args.pose_rep_type)
File "/new/conditional_gan.py", line 143, in make_generator
outputs = [keras.layers.Lambda(lambda x: ktf.identity(x))(out) for out in outputs]
NameError: global name 'keras' is not defined

I added 'import keras' at conditional_gan.py and run it again it gives new error:

Traceback (most recent call last):
File "train.py", line 29, in
main()
File "train.py", line 23, in main
gan = CGAN(generator, discriminator, **vars(args))
File "/new/conditional_gan.py", line 262, in init
discriminator_optimizer=Adam(2e-4, 0.5, 0.999), **kwargs)
File "/new/gan/gan.py", line 29, in init
generator_input = self._generator.input
AttributeError: 'NoneType' object has no attribute 'input'