fixture.py 文件源码

def __getattr__(self, name):
        if name.startswith(self.factory_method_prefix):
            raise AttributeError(name)

        factory = self.get_factory_method_for(name)
        if inspect.isgeneratorfunction(factory):
            with self.wrapped_attribute_error():
                generator = factory()
                instance = next(generator)
            self.attribute_generators.append(generator)
        else:
            with self.wrapped_attribute_error():
                instance = factory()

        setattr(self, name, instance)
        self.attributes_set[name] = instance
        return instance