Error compare two list

Revit
,
1

Hello

I have two parameters lists obtained from two elements in Revit, the first one is a wall in a local model, the second one is the same wall but obtained from linked model.

When I compared these two list, the result could be that list are equals, but the result is that two list are different.

If I use the dynamo node == the result is that both list are equal. If I use that line in a code block List1 == List2, the result is that both list are equal.

In other way, if I compared these two list in a python script node, the result is that two list are different.

If I compared an element in the list one with the same element in the list two, both are different.
if LocParList != LinParList:
CTRL = 1
if set(LocParList) != set(LinParList):
CTRL = 1
in both case the result is 1

if LocParList[23] != LinParList[23]:
CTRL = CTRL + 23
elif LocParList[26] != LinParList[26]:
CTRL = CTRL + 26
elif LocParList[1] != LinParList[1]:
CTRL = CTRL + 1
elif LocParList[2] != LinParList[2]:
CTRL = CTRL + 2
elif LocParList[21] != LinParList[21]:
CTRL = CTRL + 21
In that case, the result is the values are different.

image
image950×775 147 KB

2

Have you tried set.difference node?

3

Hello @RubenVivancos

I need to compare these two list in a design script of python, but is very strange when I compare it with some dynamo node, the result is true, but when I compare it inside the design script node with a python code, the result is false.

Answering your question, I already tried the node that you tell me, and the result is the same, true.

4

I am not sure where is the result false but sounds like a node checks any item of both lists and the design script code is looking to the complete list as unique, maybe changing the lacing or levels would work :grinning:

5

That would be my guess as well. It’s hard to tell though with just the information you’ve given. Everything in the image you’ve shown looks as expected.

6

Hello

Thanks both for your answers.

I resolved this problem changing each element of the list in a string. In this way, the comparison between two elements are true when both are equals.

I changed this:
if LocParList[23] != LinParList[23]:
CTRL = CTRL + 23
for that
if str(LocParList[23]) != str(LinParList[23]):
CTRL = CTRL + 23

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