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I am getting `'FunctionTask' object is not iterable` error. Can anyone point me out, what it is?

Hi <@UL5KUA1LK>, it sounds like you are trying to iterate over a task (or possibly the result of calling a task, which is also a task). Hard to say without more code - can you provide an example?

i am doing the following:
```
@task
def generate_context_level_data(mlsi, lvnr, tol):
    ml, ci = td_split_clv(mlsi, lvnr, tol)
    return ml, ci

td_input = {'a': 1, 'b': 2, 'c': 3}
with Flow('TD') as flow:
    td_input = Parameter("td_input")
    context_level_ml, context_level_ci = generate_context_level_data(td_input['a'],
                                                 td_input['b'],
                                                 td_input['c'])
```

Ah ok, it’s because you are assigning the result of `generate_context_level_data` to two variables (`context_level_ml` and `context_level_ci`), but Prefect doesn’t know what the result of `generate_context_level_data` is, so Python can’t do that unpacking.

```
context_result = generate_context_level_data(...)
context_level_ml = context_result[0]
context_level_ci = context_result[1]
```

Python will let us index an unknown object like `context_result`, but not unpack it.

(Note, I can’t promise this will work exactly as written because it depends on what is actually coming out of `generate_context_level_data` but this pattern should work — return a single object from your task, then index it appropriately)

<@ULVA73B9P> archive “Error unpacking task: `'FunctionTask' object is not iterable`”

<@UKTUC906M> thanks, that helps! Then I have to make sure what get passed around between `task`.

<https://github.com/PrefectHQ/prefect/issues/1380>