title: Importing models in Django python
body: <p>How can I import all models in the settings.py in INSTALLED_APPS? When i`m trying to insert some model there is an error occurred: "no models named app1_model"</p>
  
  <pre><code>-ProjectName
  --ProjectName
  ---models
  ----__init__.py
  ----admin.py
  ----app_1_model
  ----....
  ----app_n_model
  ---templates
  ---__init__.py
  ---settings.py
  ---urls.py
  ---wsgi.py
  --manage.py
  </code></pre>
  
  <p>^ Structure of project ^</p>