How to use Dynamo node core into python

Revit
1

Hi everyone.

Please help me to get the list of Elements that are sorted by Z value and use the python language in dynamo.

I have used “List.SortByKey” in the python script but I can not get the list of Element.

List.SortByKey node in dynamo will be extract 2 sorted list and sortd keys, but I just would like to get the sorted list. In Python script I extract a list of them, however I can not get list of “sorted list” although using “List.GetItemAtIndex”

  1. The list of Elements by using dynamo node.
  2. The list of list when I use “List.SortBykey”

And I do not understand the List.Map node in Dynamo, please help me to know it in detail.

This is code I have use:

if IN[0] == True:
cols = uidoc.Selection.PickObjects(Selection.ObjectType.Element)
Framing =
for i in cols:
Framing1 =
k = doc.GetElement(i)
Framing.append(k)

z =
for i in Framing:
z.append(i.Location.Curve.GetEndPoint(0).ToPoint().Z)

import DSCore
from DSCore import *
z = List.SortByKey(Framing,z)

Thank you for your help.

Capture
Capture.png1598×838 78.7 KB

2

When I use “List.GetItemAtIndex” it has a problem like the below Image:

222
222.png843×573 40.1 KB

And If I use “List.GetItemAtIndex” in dynamo node it does not have any warning.

33
33.png1378×720 55.8 KB

What is difference between them?

3

Could you post all your code inside the python script node properly formatted?

4

Yes, this is my code:

import clr
clr.AddReference(“RevitNodes”)
clr.AddReference(“RevitServices”)
clr.AddReference(“RevitNodes”)
clr.AddReference(“RevitAPI”)
clr.AddReference(“RevitAPIUI”)
clr.AddReference(“ProtoGeometry”)
clr.AddReference(“System.Windows.Forms”)
clr.AddReference(“System.Drawing”)

import System
from System.Windows.Forms import *
from System.Drawing import *
from System.Collections.Generic import *

import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
from RevitServices.Elements import *

doc = DocumentManager.Instance.CurrentDBDocument
uidoc = DocumentManager.Instance.CurrentUIApplication.ActiveUIDocument
view =doc.ActiveView
import Autodesk.Revit.Creation

import Autodesk
from Autodesk.Revit.DB import *
from Autodesk.Revit.DB import (XYZ
)

import Autodesk.Revit.UI
from Autodesk.Revit.UI import *
from Autodesk.Revit.UI import (Selection)

import Revit
import Autodesk.DesignScript.Geometry
from Autodesk.DesignScript.Geometry import *

clr.ImportExtensions(Revit.Elements)
clr.ImportExtensions(Revit.GeometryConversion)

#Code from Here
TransactionManager.Instance.EnsureInTransaction(doc)

doc = DocumentManager.Instance.CurrentDBDocument
uidoc = DocumentManager.Instance.CurrentUIApplication.ActiveUIDocument
view =doc.ActiveView

lev = view.GenLevel
if IN[0] == True:
cols = uidoc.Selection.PickObjects(Selection.ObjectType.Element)
Framing = []
for i in cols:
Framing1 = []
k = doc.GetElement(i)
Framing.append(k)

z = []
for i in Framing:
z.append(i.Location.Curve.GetEndPoint(0).ToPoint().Z)

import clr
clr.AddReference(“DSCoreNodes”)
import DSCore
from DSCore import *
z7 = List.SortByKey(Framing,z)

TransactionManager.Instance.TransactionTaskDone()

OUT = z7

1 Like
5

Why not just use the nodes? Reinventing the wheel is sometimes fun but…

6

Dear JacobSmall.

I need to know the Dynamo core node because I would like to understand how to change the Dynamo node into Python. It is more usefull when we know how to get information we need to take.

I do not know why the node could be extracted the elements but I can not get the list of them.

7

In this case if you’re using python it’s likely simplier and a better practice to use the Python equivalent of the Dynamo node.

1 Like
8

Hi danhyks,

did you find out how to import Dynamo Core into Python?
it would be useful to know how to import it,

thanks in advance :slight_smile: