title: import torch error in google Colaboratory
body: <p>I get the following error on google colaboratory. </p>
  
  <blockquote>
    <p>ImportErrorTraceback (most recent call last)
     in ()
    ----> 1 import torch</p>
    
    <p>/usr/local/lib/python3.6/site-packages/torch/<strong>init</strong>.py in ()
         54 except ImportError:
         55     pass
    ---> 56 from torch._C import *
         57 
         58 <strong>all</strong> += [name for name in dir(_C)</p>
    
    <p>ImportError: No module named _C</p>
  </blockquote>
  
  <p>I tried importing from a different directory. But, still get the same error. Any help?</p>