apps.is_installed(app_name) Checks whether an application with the given name exists in the registry. app_name

paginator_class The paginator class to be used for pagination. By default,

ModelAdmin.get_list_display(request) [source] The get_list_display method is

class backends.smtp.EmailBackend(host=None, port=None, username=None, password=None, use_tls=None, fail_silently=False, use_ssl=None, timeout=None, ssl_keyfile=None,

BoundField.errors A list-like object that is displayed as an HTML <ul class="errorlist">

ContentType.model_class() Returns the model class represented by this ContentType instance. For

permission_required(perm, login_url=None, raise_exception=False) [source] It’s a relatively

class FixedOffset(offset=None, name=None) [source] A

SET_NULL [source] Set the ForeignKey null; this is only possible if null

empty_label By default the <select> widget used by ModelChoiceField will have an empty choice