title: Get a list of all installed applications in Django and their attributes
body: <p>In my Django website, I'm creating a class that interact dynamically with other applications installed in the website. I have to do a manipulation on each field of each application.</p>
  
  <p>So I want to save the name of all installed applications in a list and get the attributes of each one. There is a way to do that using an iterator or something else ?</p>