title: how to unzip .7z file on google colaboratory?
body: <p>I am trying to solve grocery dataset from kaggle <a href="https://www.kaggle.com/c/favorita-grocery-sales-forecasting/data" rel="nofollow noreferrer">https://www.kaggle.com/c/favorita-grocery-sales-forecasting/data</a> I am unable to unzip the <code>train.csv.7z</code> file on google colab.</p>
  
  <p>I have tried 
  <code>!p7zip -d train.csv.7z</code>
  but its giving error 
  <code>/usr/bin/p7zip: cannot read train.csv.7z</code></p>