title: How to import package in online code editor?
body: <p>I'm trying to write in online editor with python2.7.  But I can't import library e.g <code>import igraph</code>.</p>
  
  <p>How can I import it or every library to editors?
  I can't find anything in their help.</p>
  
  <p>Editors such as: <a href="https://www.tutorialspoint.com/execute_python_online.php" rel="nofollow noreferrer">tutorialspoint</a> or <a href="https://repl.it/languages/python" rel="nofollow noreferrer">repl</a></p>