摘要：
class ModelIterable(BaseIterable): """Iterable that yields a model instance for each row.""" def __iter__(self): queryset = self.queryset db = queryse 阅读全文
摘要：
class ModelBase(type): """Metaclass for all models.""" def __new__(cls, name, bases, attrs, **kwargs): super_new = super().__new__ # Also ensure initi 阅读全文