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apps.get_model(app_label, model_name, require_ready=True) This Application Registry returns the Model with the given app_label and model_name. As a shortcut, this method also accepts a single argument in the form app_label.model_name. model_name is case-insensitive. Raises LookupError if no such application or model exists.  Raises ValueError when called with a single argument that doesn’t contain exactly one dot. Requires the app registry to be fully populated unless the require_ready argument is set to False. Setting require_ready to False allows looking up models while the app registry is being populated, specifically during the second phase where it imports models. Then get_model() has the same effect as importing the model.  The main use case is to configure model classes with settings, such as AUTH_USER_MODEL . When require_ready is False, get_model() returns a model class that may not be fully functional until the app registry is fully populated. For this reason, it is ...

apps.is_installed(app_name):- Checks whether an application with the given name exists in the registry.  app_name is the full name of the app, Ex: 'django.contrib.admin'.

apps.get_app_configs():- Returns an iterable of AppConfig instances.

apps.ready:- Boolean attribute that is set to True after the registry is fully populated and all AppConfig.ready() methods are called.

apps:- The application Registry provides the following public API.  Below are the Methods: apps.ready apps.get_app_configs() apps.get_app_config(app_label) apps.is_installed(app_name)