Hi all wondering if having multiple optional inputs for task

Question

Hi all wondering if having multiple optional inputs for tasks with defaults provided is supported Will drop a minimal example in thread but essentially we have tasks with one default provided that serialize just fine but tasks with more than one default provided that don t serialize with the error `flytekit exceptions user FlyteAssertion Input was not specified for optional int of type simple INTEGER` Issues and both seem related Has anyone else seen this before flytekit 1 3 0

Heidi Hurst · Answer

cc < Ailin Yu>

Heidi Hurst · Answer

Here s a minimal example that fails to compile ```from flytekit import task workflow OPTIONAL INT = 5 OPTIONAL STR 1 = foo OPTIONAL STR 2 = bar task def one default task required input str optional int int = OPTIONAL INT gt str return required input + str optional int task def lots of defaults task required input str optional int int = OPTIONAL INT optional str 1 str = OPTIONAL STR 1 optional str 2 str = OPTIONAL STR 2 gt str return required input + str optional int + optional str 1 + optional str 2 task def no defaults task string1 str string2 str gt str return string1 + string2 workflow def some fussy defaults workflow required input str gt str output1 = one default task required input=required input output2 = lots of defaults task required input=required input return no defaults task output1 output2 ```

Heidi Hurst · Answer

And here s the full serialization error ```Traceback most recent call last File root micromamba envs sci ops dev lib python3 8 site packages flytekit exceptions scopes py line 160 in system entry point return wrapped args kwargs File root micromamba envs sci ops dev lib python3 8 site packages flytekit clis sdk in container serialize py line 69 in serialize all serialize to folder pkgs serialization settings local source root folder File root micromamba envs sci ops dev lib python3 8 site packages flytekit tools repo py line 63 in serialize to folder loaded entities = serialize pkgs settings local source root options=options File root micromamba envs sci ops dev lib python3 8 site packages flytekit tools repo py line 46 in serialize module loader just load modules pkgs=pkgs File root micromamba envs sci ops dev lib python3 8 site packages flytekit tools module loader py line 33 in just load modules importlib import module name File root micromamba envs sci ops dev lib python3 8 importlib init py line 127 in import module return bootstrap gcd import name level package level File lt frozen importlib bootstrap gt line 1014 in gcd import File lt frozen importlib bootstrap gt line 991 in find and load File lt frozen importlib bootstrap gt line 975 in find and load unlocked File lt frozen importlib bootstrap gt line 671 in load unlocked File lt frozen importlib bootstrap external gt line 843 in exec module File lt frozen importlib bootstrap gt line 219 in call with frames removed File src flyte sci ops failing workflow py line 35 in lt module gt def some fussy defaults workflow required input str gt str File root micromamba envs sci ops dev lib python3 8 site packages flytekit core workflow py line 764 in workflow return wrapper workflow function File root micromamba envs sci ops dev lib python3 8 site packages flytekit core workflow py line 759 in wrapper workflow instance compile File root micromamba envs sci ops dev lib python3 8 site packages flytekit core workflow py line 636 in compile workflow outputs = exception scopes user entry point self workflow function input kwargs File root micromamba envs sci ops dev lib python3 8 site packages flytekit exceptions scopes py line 207 in user entry point raise FlyteScopedUserException exc info flytekit exceptions scopes FlyteScopedUserException Input was not specified for optional int of type simple INTEGER```

Ketan (kumare3) · Answer

Default inputs are not supported for tasks Only optional inputs are supported you can default to none The compiler should have complained for unbound inputs Reason is there is no easy way to have all values as defaults

Ketan (kumare3) · Answer

Cc < Eduardo Apolinario eapolinario > < Niels Bantilan> let s talk about this