Hi Is there any specific usage when working with dict return

Question

Hi Is there any specific usage when working with dict returned by task below part is failing with message that get connections task class has no method get ```token = EnvVarSecret TOKEN connections = get connections token=token this is a task that returns dict name connection string start task result = start task connections get some key i d expect to get value from dict not attribute error```

Anna Geller · Answer

No there isn t The issue that you see is likely due to build time vs runtime differences During build time Prefect constructs your flow graph while at runtime it passes data between tasks The Secret task should be only called from within a flow do you happen to call it at the module scope

Ievgenii Martynenko · Answer

This is a part of a flow Secret is working fine and returns what I expect and get connections also return dict during run time I need to pass only single value into next task not whole dict

Ievgenii Martynenko · Answer

That means that task should return single string in my case not a dict

Anna Geller · Answer

I don t have enough information to give you any recommendations could you share an example I could reproduce to understand your issue better

Ievgenii Martynenko · Answer

```get connections = K2Vault name= Get connections from vault start task = MySQLExecute name= XXX query=sql start commit=True with Flow name= XXX as flow token = EnvVarSecret TOKEN connections = get connections token=token start task result = start task eval connections get aws connection ```

Ievgenii Martynenko · Answer

Suppose that get and eval will not work that should be handled in Task

Ievgenii Martynenko · Answer

At least kwargs unpacking should work ```conn = get connections task run result = run task conn ```

Anna Geller · Answer

this is the part that you may need to address ```start task result = start task eval connections get aws connection ``` in Prefect 1 0 you can only call tasks in your Flow You should move this part to a separate ` task` and call it in your Flow to make it work

Ievgenii Martynenko · Answer

What about unpacking Are you going to allow this in Orion

Anna Geller · Answer

100 in Prefect 2 0 you can run any Python code you like incl unpacking there is no more DAG requirement to package all code into tasks you could have purely a Python script with a single ` flow` decorator which gives Prefect an entry point to orchestration and that s all you need to turn your code into a Prefect workflow