title: No module named 'cupy' on Google Colab
body: <p>I'm working on the FastPhotoStyle project:
  <a href="https://github.com/NVIDIA/FastPhotoStyle" rel="nofollow noreferrer">https://github.com/NVIDIA/FastPhotoStyle</a></p>
  
  <p>and I follow the steps of its tutorial:
  <a href="https://github.com/NVIDIA/FastPhotoStyle/blob/master/TUTORIAL.md" rel="nofollow noreferrer">https://github.com/NVIDIA/FastPhotoStyle/blob/master/TUTORIAL.md</a></p>
  
  <p>I'm running Example 1 on Google Colab where default environment is</p>
  
  <ul>
  <li>CUDA 10.0 </li>
  <li>Python 3.6</li>
  <li>Chainer 5.4.0</li>
  <li>CuPy 5.4.0</li>
  </ul>
  
  <p>This is how I tried on Colab Notebook:</p>
  
  <p><a href="https://colab.research.google.com/drive/1oBgdJgXCLlUQhpwPoG1Uom3OKTzHR4BF" rel="nofollow noreferrer">https://colab.research.google.com/drive/1oBgdJgXCLlUQhpwPoG1Uom3OKTzHR4BF</a></p>
  
  <p>After running</p>
  
  <pre><code>!python3 demo.py --output_image_path results/example1.png
  </code></pre>
  
  <p>Here's the error message I got:</p>
  
  <blockquote>
    <p>Traceback (most recent call last):     File "demo.py", line 9, in  </p>
    
    <p>import process_stylization  </p>
    
    <p>File "/content/drive/FastPhotoStyle/process_stylization.py", line 14,
    in</p>
    
    <p>from smooth_filter import smooth_filter</p>
    
    <p>File "/content/drive/FastPhotoStyle/smooth_filter.py", line 327, in </p>
    
    <p>from cupy.cuda import function</p>
    
    <p>ModuleNotFoundError: No module named 'cupy'</p>
  </blockquote>
  
  <p>Could someone help me with it please?</p>