title: Python 3.6 . 'virtualenv' is not recognized as an internal or external command, operable program or batch file
body: <p>I am using advanced Python as well as Pycharm (Up to date as of 2017) when I am using pip/virtual env install. </p>
  
  <p>I got this error:</p>
  
  <blockquote>
    <p>'virtualenv' is not recognized as an internal or external command,
    operable program or batch file.</p>
  </blockquote>
  
  <p>Could advise a solution for this?</p>
  
  <p>Thanks.</p>