Replace empty list with list (eg. replace empty list with [A,B,C] )

[Macchi]

Hello all, I’m trying to replace the empty lists with list

eg.

index 1 [a,b,c]
index 2 [a,b,c]
index 3 empty list
index 4 [a,b,c]
index 5 empty list

-I want to replace the empty list with a list [A,B,C]

index 1 [a,b,c]
index 2 [a,b,c]
index 3 [A,B,C]
index 4 [a,b,c]
index 5 [A,B,C]

I’ve tested several methods but none of them work perfectly. Some of them work with a single value, some of them can only replace item at one index. Please see the snapshot for detail.

I really hope someone can give me some advice. Thank you!

[Daan]

Make the List.ReplaceEmptyList cross-laced

[Nick_Boyts]

I believe Orchid has nodes for replacing multiple indices in a list or you can write something in python to do it. Ootb nodes won’t do multiple indices at once.

[Macchi]

Thanks, Daan & Nick

I manage to use both List.ReplaceEmptyLists and Manage.ReplaceNulls to get what I want.

Here is the solution:

[Nick_Boyts]

@Macchi I don’t think that worked as you expected. Look at the values of your sublists. They’re just being repeated.

Here’s a simple python code that will do the trick:

output = []

for a in IN[0]:
	if len(a) == 0:
		output.append(IN[1])
	else:
		output.append(a)
		
OUT = output

[Macchi]

Thanks Nick. That’s a much simpler solution.

[Ravindra.Karale]

HI Nick_Boyts

I could not use this python code for the below case. Please advise.

[Elie.Trad]

@Ravindra.Karale Hi and welcome, it works perfectly from my side, can you show the Python code?

[Ravindra.Karale]

Hi Elie.Trad, Many thanks for your reply. An attached snip for your review.

[Nick_Boyts]

You have an extra list level. You either need to remove it or modify the code to handle that extra layer with another loop.

[Ravindra.Karale]

Many thanks Nick!