title: Django SECRET_KEY error due to containing "!" in secret key
body: <p>I'm trying to deploy my django application in heroku. While deploying it seems that i need to set DJANGO_SECRET_KEY manually in <code>heroku config:set DJANGO_SECRET_KEY=secretekey</code> instead environment variablele file. But i'm getting the error <code>bash event not found</code> . I know this is due to exclamation mark in SECRET_KEY. I've tried using single and double quotes but that too didn't work.</p>
  <p>This is the part of my SECRET_KEY causing error,</p>
  <pre><code> (+9=!sbeh**************
  </code></pre>
  <p>EDIT:
  i'm using platformio-ide-terminal in ubuntu</p>