title: What does it mean to be "on path" while installing Python packages?
body: <p>I was installing a pylint version for Django and the tutorial states:</p>
  
  <blockquote>
    <p>Ensure pylint-django is installed and on your path and then execute:</p>
    
    <p>pylint --load-plugins pylint_django [..other options..]
    </p>
  </blockquote>
  
  <p>I initially installed pylint using $<code>pip install pylint</code>. But when I execute $<code>pylint --load-plugins pylint_django</code> it throws up an error saing that <strong>'pylint' is not recognized as an internal or external command,
  operable program or batch file.</strong></p>
  
  <p>Why is this happening?</p>