Method is_installed

django/apps/registry.py:242–249

Check whether an application with this name exists in the registry. app_name is the full name of the app e.g. 'django.contrib.admin'.

(self, app_name)

        self.clear_cache()

    def is_installed(self, app_name):
        """
        Check whether an application with this name exists in the registry.

        app_name is the full name of the app e.g. 'django.contrib.admin'.
        """
        self.check_apps_ready()
        return any(ac.name == app_name for ac in self.app_configs.values())

    def get_containing_app_config(self, object_name):
        """