Keras + tensorflow gives the error “no attribute 'control_flow_ops'”

Question

I am trying to run keras for the first time. I installed the modules with:

pip install keras --user
pip install tensorflow --user

and then

Answer 1

There is an issue between Keras and TF, Probably tf.python.control_flow_ops does not exist or not visible anymore. using below import statements you can resolve this issue

import tensorflow as tf
tf.python.control_flow_ops = tf

For Details check: https://github.com/fchollet/keras/issues/3857

Answer 2

If not Using TensorFlow 1.0.0; use tf.python_io in later versions

import tensorflow as tf 

tf.python_io.control_flow_ops = tf

Answer 3

I got this problem when it turns out keras was using the Theano backend. To fix it do one of these:

• In ~/.keras/keras.json set "backend": "tensorflow".
• Set the environment variable KERAS_BACKEND to tensorflow.

See Keras backend documentation for more information.