__init__.py 文件源码

def __init__(self, *args, **kwargs):
        # Create the QuerySequence object where most of the magic happens.
        if 'query' not in kwargs:
            kwargs['query'] = QuerySequence(*args)
        elif args:
            raise ValueError(
                "Cannot provide args and a 'query' keyword argument.")

        # If a particular Model class is not provided, just use the generic
        # model class.
        # TODO Dynamically generate the fields available in this model via
        # introspection of the input QuerySets.
        if 'model' not in kwargs:
            kwargs['model'] = QuerySetSequenceModel

        super(QuerySetSequence, self).__init__(**kwargs)

        # Override the iterator that will be used. (Currently used only in
        # Django >= 1.11.)
        self._iterable_class = SequenceIterable