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#ask-the-community
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# ask-the-community
j
Jan Fiedler
05/15/2023, 2:34 PMHello! I was wondering if its possible to modify workflow parameters outside of a task like this:
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@task
def print_stuff(input: str):
print(input)
@workflow
def wf1(test: str = "test"):
print_stuff(input=f"hello {test}")testf
Fabio Grätz
05/15/2023, 4:48 PMOnly in a @dynamic workflow
j
Jan Fiedler
05/15/2023, 5:09 PMThanks 🙏 Looks like dynamic workflows are the way to go for a lot of use cases
y
Yee
05/15/2023, 5:41 PM
so workflow code look like python but it’s really more of a dsl.
at run time, the all the tasks are overloaded to return promise objects instead
so if you run that example, at compile time, i think what you would get is a statically bound string of “hello Promise<…>”
dynamic tasks are workflows that are not compiled until run-time.
basically if you say to yourself, i don’t know what the structure of the workflow will be until i know the inputs, then you definitely want a dynamic task.
a more concrete example
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@workflow
def wf(a: int)
for i in range(a): ... # this fails.
@dynamic
def dwf(a: int)
for i in range(a): ... # this succeeds.
# however tasks in a dynamic task still produce promises
@dynamic
def dwf()
a = task_that_produces_an_int()
for i in range(a): ... # this still fails.testj
Jan Fiedler
05/15/2023, 7:38 PMThanks for making this clear!
For my example i wanted to modify the string before putting it into an input of the type FlyteFile. I think in this case i cannot do it inside of the task.
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