Backend change

[Aria Khademi]

I'm new to Keras. I'd like to change the backend from the default theano to tensorflow, but I can't find the keras.json file anywhere! I created it in the same folder as my python code, but it didn't change the backend. What should I do?

[Matias Valdenegro]

keras.json lives inside ~/.keras as described in http://keras.io/backend/

[Aria Khademi]

I know, but I don't find " .keras" folder. Is it automatically created in the same folder I am running the code? I can't find it there although I have run and compiled a Keras code.

[Matias Valdenegro]

No, .keras is not the same as ~/.keras, the ~ means your $HOME folder, so
.keras is inside your home folder, not where you are running your code.

Alternatively you could just set the KERAS_BACKEND environment variable to
tensorflow and then run the python code.

[Aria Khademi]

I did that too. But it does not work. The KERAS_BACKENED variable gets run, it shows that the backend is changed, but then when I run the "python -c "from keras import backend; print backend._BACKEND"", it shows that the backend is theano. Thanks for answering my question, but I guess I just can't switch!

[p.nec...@gmail.com]

you can also just switch barbarically with os.environ['KERAS_BACKEND']='tensorflow' in your script before importing keras

[aruns...@gmail.com]

Hi Aria.

I too had the same problem in ubuntu. Later I found out that the '.keras'  folder is there in the home folder but is hidden. You can view the hidden files by clicking 'ctrl'+'H' or view-> show hidden files. Now you would be able to see the .keras folder and the configuration file. Change the environmental variable '_BACKEND' and choose the one you needed.