TypeError: iteration over non-sequence of type NoneType

Revit
1

So, I’m getting this error in this python script which orients 3D views to vectors. I tried to iterate over the lists but keep getting this error.

image
image1248×665 91.2 KB 

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

#Import ToDSType(bool) extension method
clr.AddReference("RevitNodes")
import Revit
clr.ImportExtensions(Revit.Elements)
clr.ImportExtensions(Revit.GeometryConversion)

#Import DocumentManager and TransactionManager
clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

from System.Collections.Generic import *

#Import RevitAPI
clr.AddReference("RevitAPI") 
import Autodesk
from Autodesk.Revit.DB import ReferencePointArray

def tolist(obj1):
	if hasattr(obj1,"__iter__"): return obj1
	else: return [obj1]

views = tolist(UnwrapElement(IN[0]))
vectors = tolist(IN[1])
vt = []

for vector in vectors:
	v = vt.append(vector.ToRevitType())

doc = DocumentManager.Instance.CurrentDBDocument
uiapp = DocumentManager.Instance.CurrentUIApplication
app = uiapp.Application

TransactionManager.Instance.EnsureInTransaction(doc)

#apply lineweight override to elements in an input list
for i in v:
	for view in views: 
		view.OrientTo(i)
	
# "End" the transaction

TransactionManager.Instance.TransactionTaskDone()
OUT = doc.ActiveView
2

@theshysnail the Python output is feeding whatever active view you are in Revit, maybe someone else can help fetching the 3D views within Python after the orientation…, but as a quick response, you can try this:

image
image1763×750 92.1 KB 

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

#Import ToDSType(bool) extension method
clr.AddReference("RevitNodes")
import Revit
clr.ImportExtensions(Revit.Elements)
clr.ImportExtensions(Revit.GeometryConversion)

#Import DocumentManager and TransactionManager
clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

from System.Collections.Generic import *

#Import RevitAPI
clr.AddReference("RevitAPI") 
import Autodesk
from Autodesk.Revit.DB import ReferencePointArray

view = UnwrapElement(IN[0])
vector = IN[1]

doc = DocumentManager.Instance.CurrentDBDocument
uiapp = DocumentManager.Instance.CurrentUIApplication
app = uiapp.Application

TransactionManager.Instance.EnsureInTransaction(doc)

#apply lineweight override to elements in an input list
for vi, ve in zip(view, vector):
	v = ve.ToRevitType()
	vi.OrientTo(v)
# "End" the transaction

TransactionManager.Instance.TransactionTaskDone()
OUT = 0#doc.ActiveView
1 Like
3

here you heve to type
for i in vt:

2 Likes
4

The issue is that you’re setting v = vt.append(). Append already modifies the existing list, so you would just use vt in place of v.

1 Like