Capturing function arguments and results?

[ajasja]

Is it possible to capture the function arguments and results?

For example:

@task(capture_args=True)
def test(x, y, opt=True)
    return x*y


test(1,2, True)

And then test would have args kwargs and results captured.
I guess manually add_artifacts(*args, *kwargs) to the function could work, but then you have to change the code of the functions...

[koaning]

In a previous iteration I actually had this feature but it came with downsides.

• You might end up storing a lot of state if you add in a heavy object.
• You might end up adding something that you cannot easily convert into JSON.

At the moment my philosophy was that if you want to log something, it should be very conscious. Hence I allow you to log whatever you like using the add_artifacts function. Does this not suffice?

[ajasja]

I agree with the downsides, but an extra flag (that is false by default) and that you have to turn on in the decorator requires a conscious decision.

Function args could have their own section separate from add artifacts (which would make it easier to present in the visualisations) and most importantly, no code changes to the functions would be needed (enabling to debug or visualize functions that are part of a library and not directly under your control).

add_artifacts(*args, *kwargs) works, but then the args could potentially get mixed up with other artifacts.

[koaning]

Fair enough, adding a flag that is false by default feels fair.