fixtures.py 文件源码

def _with_register_classes(cls, fn):
        cls_registry = cls.classes

        class FindFixtureDeclarative(DeclarativeMeta):
            def __init__(cls, classname, bases, dict_):
                cls_registry[classname] = cls
                return DeclarativeMeta.__init__(
                    cls, classname, bases, dict_)

        class DeclarativeBasic(object):
            __table_cls__ = schema.Table

        _DeclBase = declarative_base(metadata=cls.metadata,
                                     metaclass=FindFixtureDeclarative,
                                     cls=DeclarativeBasic)
        cls.DeclarativeBasic = _DeclBase
        fn()

        if cls.metadata.tables and cls.run_create_tables:
            cls.metadata.create_all(config.db)