How Can You Create an Admin User with Factory_Boy?

If you subclass factory.DjangoModelFactory it should save the user object for you. See the note section under PostGenerationMethodCall. Then you only need to do the following:

class UserFactory(factory.DjangoModelFactory):
    FACTORY_FOR = User

    email="admin@admin.com"
    username="admin"
    password = factory.PostGenerationMethodCall('set_password', 'adm1n')

    is_superuser = True
    is_staff = True
    is_active = True