What s the best approach to using a for loop that would norm

Question

What s the best approach to using a for loop that would normally be within the `main` section of a standard python script

Kevin Kho · Answer

Mapping would be the analog if the tasks are independent If it s a sequential loop we have <https docs prefect io core advanced tutorials task looping html|Task Looping>

Jason Motley · Answer

This seems a little on the side of what I was thinking of Right now I have a couple functions which are then used in a for loop at the bottom E g ``` for x in my dict id= dict x response1= function1 id file= function2 id response1 result= functino3 id file ```

Kevin Kho · Answer

Yes that should be able to be done by <https docs prefect io core concepts mapping html mapping|mapping>

Jason Motley · Answer

does my dictionary go in the map 1 2 3 in the example

Kevin Kho · Answer

Use a task to either pull out the keys or values since you need to map over a List

Jason Motley · Answer

if you were rewriting my example above then there would be a task before the first row in the for loop which gets at the keys and then

Jason Motley · Answer

I guess I m trying to visualize this outside of the numerical example on the help page

Kevin Kho · Answer

```with Flow as flow ids = get keys dict response1 = function1 map ids files = function2 map ids response1 result = function3 map ids files ```

Kevin Kho · Answer

`response1` `files` `result` being Lists

Jason Motley · Answer

Mapping cannot be done over dictionaries

Kevin Kho · Answer

Maybe it can but I wouldn t advise because it s not explicit whether you re mapping over keys or values