code: def import_event_modules():
      
      for installed_app in getsetting('INSTALLED_APPS'):
          module_name = u'{}.{}'.format(installed_app, EVENTS_MODULE_NAME)
          try:
              import_module(module_name)
          except ImportError:
              pass
docs: Import all events declared for all currently installed apps
  
      This function walks through the list of installed apps and tries to
      import a module named `EVENTS_MODULE_NAME`.