Help with IF Conditional Statement

[Daniel.Gijsbers]

Yes I would really like to do it…
The only things is I don’t know, I copied it from someone else on the forum. Python does not seem to have a regular flatten command. But after searching around again I found this:

Use the Flatten node in python script

Hi, i try to use the Flatten node in a python script. For some reason it didn’t work… [image] **Error:**NameError: name ‘Flatten’ is not defined python code: import clr clr.AddReference(“RevitAPI”) clr.AddReference(“ProtoGeometry”) clr.AddReference(“RevitNodes”) clr.AddReference(“RevitServices”) clr.AddReference(‘RevitAPIUI’) import Autodesk import Revit clr.ImportExtensions(Revit.GeometryConversion) import RevitServices from Autodesk.Revit.DB import * from Autodesk.DesignScript.Geom…

So with the DSCore reference i could turn it in to this:

"""
LIST: Replacement of Dynamo IF node
"""
__author__ = Daniel Gijsbers
__version__ = '2.0.0'

# Enable Python support and load DesignScript library
import clr

clr.AddReference('DSCoreNodes') 
import DSCore
from DSCore import *

# The inputs to this node will be stored as a list in the IN variables.
ToF = IN[0] # a boolean
List1 = IN[1]
List2 = IN[2]

Result = []

if ToF == True:
	Result.append(List1)
else:
	Result.append(List2)
# Making use of Design script for flattening

OUT = List.Flatten(Result,2) # The second input allows for the level of flattening<a class="attachment" href="//cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex022/uploads/dynamobim/original/3X/9/0/90a184274093ef3954181ef961993ae1d8b8fdf8.dyn">DesignScripORPythonIFnode.dyn</a> (14.3 KB)