title: Module Not found error on Google Colaboratory
body: <p>Getting a weird import error when running the following code.</p>
  <pre><code>    ! pip install --user --upgrade git+https://github.com/broadinstitute/keras-resnet
      import keras
      import keras_resnet
      
  </code></pre>
  <p>Basically, I'm trying to install keras_resnet for keras_retinanet on Google colab however I'm getting a not found error. Output is below. The installation completes but then the import fails. Tested it locally and it works only fails on Google Colaboratory.</p>
  <pre><code>  Running setup.py install for keras-resnet ... - \ done
  Successfully installed keras-resnet-0.0.8
  ---------------------------------------------------------------------------
  ModuleNotFoundError                       Traceback (most recent call last)
  &lt;ipython-input-25-4521fd3221d7&gt; in &lt;module&gt;()
        2 #os.chdir('keras-retinanet')
        3 import keras
  ----&gt; 4 import keras_resnet
        5 #from keras-retinanet.keras_retinanet.models.resnet import custom_objects
        6 #model = keras.models.load_model('/path/to/model.h5', custom_objects=custom_objects)
  
  ModuleNotFoundError: No module named 'keras_resnet'
  </code></pre>