default_backend.py 文件源码

def setUp(self):
        """
        Create an instance of the default backend for use in testing,
        and set ``ACCOUNT_ACTIVATION_DAYS`` if it's not set already.

        """
        self.old_activation = getattr(settings,
                                      'ACCOUNT_ACTIVATION_DAYS', None)
        if self.old_activation is None:
            settings.ACCOUNT_ACTIVATION_DAYS = 7  # pragma: no cover