'List[object]' object has no attribute ' in for loop

Developers
1

I’m getting “AttributeError: ‘List[object]’ object has no attribute ‘AddLeader’” with this code. I’m a little confused because shouldn’t the for loop make this work?

 import clr

clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *

clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.GeometryConversion)
clr.ImportExtensions(Revit.Elements)

textNote = UnwrapElement(IN[0])
leftRight = IN[1]

	
doc = DocumentManager.Instance.CurrentDBDocument



if not isinstance(textNote, list):
	textNote = [textNote]


TransactionManager.Instance.EnsureInTransaction(doc)

for tN in textNote:
	if leftRight in ('R', 'r', 'right', 'RIGHT', 'Right'):
		leader = tN.AddLeader(TextNoteLeaderTypes.TNLT_STRAIGHT_R)
		leaderAnchor = leader.Anchor
		
		leader.Elbow = XYZ(leaderAnchor.X + 1, leaderAnchor.Y, leaderAnchor.Z)
		leader.End = XYZ(leaderAnchor.X + 3, leaderAnchor.Y + 2, leaderAnchor.Z)
	else:
		leader = tN.AddLeader(TextNoteLeaderTypes.TNLT_STRAIGHT_L)
		leaderAnchor = leader.Anchor
		
		leader.Elbow = XYZ(leaderAnchor.X - 1, leaderAnchor.Y, leaderAnchor.Z)
		leader.End = XYZ(leaderAnchor.X - 3, leaderAnchor.Y + 2, leaderAnchor.Z)



TransactionManager.Instance.TransactionTaskDone()

OUT = textNote, textNotePoint,tNoteLoc, leaderAnchor, leaderAx, leaderAy
2

I remembered that I have to unwrap the input in the for loop. This appears to be working for me now.

import clr

clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *

clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.GeometryConversion)
clr.ImportExtensions(Revit.Elements)

textNote = IN[0]
leftRight = IN[1]

	
doc = DocumentManager.Instance.CurrentDBDocument



if not isinstance(textNote, list):
	textNote = [textNote]


TransactionManager.Instance.EnsureInTransaction(doc)

for tN in textNote:
	tNu = UnwrapElement(tN)
	if leftRight in ('R', 'r', 'right', 'RIGHT', 'Right'):
		leader = tNu.AddLeader(TextNoteLeaderTypes.TNLT_STRAIGHT_R)
		leaderAnchor = leader.Anchor
		leaderAx = leaderAnchor.X + 1
		leaderAy = leaderAnchor.Y + 3
		
		leader.Elbow = XYZ(leaderAnchor.X + 1, leaderAnchor.Y, leaderAnchor.Z)
		leader.End = XYZ(leaderAnchor.X + 3, leaderAnchor.Y + 2, leaderAnchor.Z)
	else:
		leader = tNu.AddLeader(TextNoteLeaderTypes.TNLT_STRAIGHT_L)
		leaderAnchor = leader.Anchor
		leaderAx = leaderAnchor.X - 1
		leaderAy = leaderAnchor.Y + 3
		
		leader.Elbow = XYZ(leaderAnchor.X - 1, leaderAnchor.Y, leaderAnchor.Z)
		leader.End = XYZ(leaderAnchor.X - 3, leaderAnchor.Y + 2, leaderAnchor.Z)



TransactionManager.Instance.TransactionTaskDone()

OUT = textNote