is there a way i can avoid the superfluous `List` and `Dict`

Question

is there a way i can avoid the superfluous `List` and `Dict` tasks in my DAG this is taken from a barely modified example on prefect s blog code in thread

Martim Lobao · Answer

```from typing import List from prefect import Flow Parameter task from prefect engine results import LocalResult from prefect tasks prefect import create flow run get task run result from prefect executors import LocalExecutor task result=LocalResult log stdout=True def create some data length int print length return list range length task result=LocalResult log stdout=True def minimum data List int gt int new = data 0 + 2 print new new return new with Flow child executor=LocalExecutor as child flow data size = Parameter data size default=5 data = create some data data size task args=dict slug= foobar minimum data task args=dict slug= min task log stdout=True def transform and show data List int gt List int print f Got data r new data = x + 1 for x in data print f Created new data r return new data with Flow parent executor=LocalExecutor as parent flow child run id = create flow run flow name=child flow name parameters=dict data size=10 child min = get task run result child run id min new child run id = create flow run flow name=child flow name parameters=dict data size=child min child data = get task run result new child run id foobar transform and show child data ```

Anna Geller · Answer

check out <https discourse prefect io t how to avoid tasks such as list tuple or dict in a flow structure 318|this page> you can basically create an intermediary task to avoid those extra tasks such as List or Dict

Martim Lobao · Answer

thanks < Anna Geller> i m still a little confused why the `List` exists at all but it looks like the following change cleans everything up slightly smiling face ``` task def get flow parameters data size return dict data size=data size with Flow parent executor=LocalExecutor as parent flow child run id = create flow run flow name=child flow name parameters=get flow parameters data size=10 child min = get task run result child run id min new child run id = create flow run flow name=child flow name parameters=get flow parameters data size=child min child data = get task run result new child run id foobar transform and show child data ```

Martim Lobao · Answer

it looks like this is because `child min` isn t an `int` as i was expecting but rather a ` lt class prefect tasks core function FunctionTask gt ` instead

Anna Geller · Answer

True the result of the task when you pass it to downstream tasks will be int but until then this is a FunctionTask you re correct