Detect 'no data received'

[AndersDeleuran]

@Honza_Kirchner

So far I am not really sure how come the later script behaves this way. But maybe this is enough information to point me to some solution?

I’m not really sure if this helps, but for instance an empty enumerable will yield the first case, while None will yield the case (when outputting from GHPython):

Output a GH Python variable as 'Empty Generic Data Parameter'

I usually output an empty list or None, which will both output as an empty orange wire: [2022-10-14 10_45_31-Grasshopper - unnamed] Edit: For context, I’ve developed this practice over the years for structuring GHPython code. Where steps 5 and 6 are the relevant ones here (i.e. empty outputs and check inputs before running any code): [2022-10-14 10_58_56-211102_GH103_GHPython_BestPractice_Deleuran.pdf - Adobe Acrobat Reader (64-bit)] 211102_GH103_GHPython_BestPractice_Deleuran.pdf (174.9 …