#5804 [BUG] TypeTransformerFailedError when using empty dict Issue created by linhai-fn Describe the bug Before flyteorg/flytekit#2743 introduced in

1.13.6

, the workflow/task like below can handle empty dict. from flytekit import task, workflow @task def print_dict(x: dict[str, str]) -> None: for k, v in x.items(): print(f"{k}: {v}") @workflow def print_workflow() -> None: print_dict(x={}) if name == "__main__": print(f"Running print_workflow() {print_workflow()}") With

>=1.13.6

, the flyte will throw a TypeTransformerFailedError error: % pyflyte run workflow.py print_workflow Running Execution on local. TypeTransformerFailedError: Failed to convert inputs of task 'workflow.print_dict': Failed argument 'x': Not all values in '{}' are of type <class 'str'> Expected behavior The workflow/task should be able to accept empty dict like they used to in

<1.13.6

. Unless this breaking change is intentional? Additional context to reproduce The cause of the error is due to this part of the code. Similar error will raise for empty list/tuple/set due to similar logic. Screenshots No response Are you sure this issue hasn't been raised already? • Yes Have you read the Code of Conduct? • Yes flyteorg/flyte