Fix Workflow outputs (#1210)

Co-authored-by: Matt Vallillo <matt@griptape.ai>

CHANGELOG.md

@@ -9,7 +9,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## Added
 - `Workflow.input_tasks` and `Workflow.output_tasks` to access the input and output tasks of a Workflow.
 - Ability to pass nested list of `Tasks` to `Structure.tasks` allowing for more complex declarative Structure definitions.
-- Parameter `pipeline_task` on `HuggingFacePipelinePromptDriver` for creating different types of `Pipeline`s.
 - `TavilyWebSearchDriver` to integrate Tavily's web search capabilities.
 - `Workflow.outputs` to access the outputs of a Workflow.
 

griptape/structures/workflow.py

@@ -36,7 +36,7 @@ def output_tasks(self) -> list[BaseTask]:
 
     @property
     def outputs(self) -> list[BaseArtifact]:
-        return [task.output.value for task in self.output_tasks if task.output is not None]
+        return [task.output for task in self.output_tasks if task.output is not None]
 
     def add_task(self, task: BaseTask) -> BaseTask:
         if (existing_task := self.try_find_task(task.id)) is not None:

tests/unit/structures/test_workflow.py

@@ -833,7 +833,7 @@ def test_outputs(self):
 
         workflow.run()
 
-        assert workflow.outputs == ["mock output"] * 3
+        assert [output.value for output in workflow.outputs] == ["mock output"] * 3
 
     @staticmethod
     def _validate_topology_1(workflow) -> None: