title: What is the related library in keras_benchmarks of tensorflow for data_generator?
body: <p>I tried to run keras_benchmarks of tensorflow,
  as I met the similar problem as <a href="https://github.com/tensorflow/benchmarks/issues/91" rel="nofollow noreferrer">https://github.com/tensorflow/benchmarks/issues/91</a> did.</p>
  
  <p>When I ran "python run_benchmark.py" in benchmarks/scripts/keras_benchmarks,</p>
  
  <p>python told me:</p>
  
  <blockquote>
    <p>ImportError: No module named data_generator</p>
  </blockquote>
  
  <p>I've installed and run things related to tf_cnn_benchmarks and can successfully do training real data on tf_cnn_benchmarks' all models,
  but I still don't know where is data_generator.</p>
  
  <p>Here's my Environment:</p>
  
  <p>Ubuntu 16.04</p>
  
  <p>CUDA 9.0/CuDNN 7.0</p>
  
  <p>python 2.7</p>
  
  <p>PS. I've searched the web and found that tensorflow have a library named "tensor2tensor", but it doesn't help when I do pip install and import it:
  python still can't find generate_img_input_data in tensor2tensor's data_generators.(And it is named "data_generators", NOT "data_generator")</p>
  
  <blockquote>
    <p>from data_generators import generate_img_input_data</p>
    
    <p>ImportError: cannot import name generate_img_input_data</p>
  </blockquote>
  
  <p>Am I right about the direction?
  Or there are libraries else I should install and import?</p>