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import tensorflow as tf
import os
os.environ["CUDA_VISIBLE_DEVICES"]="0"

if tf.test.gpu_device_name():
    print('Default GPU Device: {}'.format(tf.test.gpu_device_name()))
else:
    print("Please install GPU version of TF")

tf.__version__sess = tf.Session(config=tf.ConfigProto(log_device_placement=True))

print("VERSION", tf.__version__sess)