class ExtractYear(expression, tzinfo=None, **extra) [source] lookup_name

class FieldFile [source] When you access a FileField on a model, you are given

Field.null If True, Django will store empty values as NULL in the database. Default is False

Options.default_permissions Defaults to ('add', 'change', 'delete'). You may customize this list, for example,

Options.verbose_name_plural The plural name for the object:

SET() [source] Set the ForeignKey to the value passed to SET()

Field.editable If False, the field will not be displayed in the admin or any other

Field.unique_for_month Like unique_for_date, but requires the field to be unique with respect to the month.

class Q [source] A Q() object, like an

class When(condition=None, then=None, **lookups) [source] A When() object is