WallType.Duplicate with Python

Revit
,
1

Hello all!

So I am working on a Python script to batch create wall, floor, roof (etc) types in Revit. As I understand the simplest way (only way?) to create new types is to duplicate existing types and changing their parameters.

But I am stuck on the first step. I can seem to duplicate a wall type.
I get the error:

AttributeError: ‘WallType’ object has no attribute ‘Duplicate’

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Python code:

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

clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.Elements)

clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

import sys
pyt_path = r'C:\Program Files (x86)\IronPython 2.7\Lib'
sys.path.append(pyt_path)
import System

doc = DocumentManager.Instance.CurrentDBDocument

UIunit = Document.GetUnits(doc).GetFormatOptions(UnitType.UT_Length).DisplayUnits
# Place your code below this line

basicwall = IN[0]
new_type = []
TransactionManager.Instance.EnsureInTransaction(doc)

new_type = basicwall.Duplicate("TEST")

TransactionManager.Instance.TransactionTaskDone()
# Assign your output to the OUT variable.
OUT = new_type
2

I figuered it out!

I have to Unwrap the elements first:

basicwall = UnwrapElement(IN[0])

3

Try getting the Revit element

basicwall = UnwrapElement(IN[0])

Also, you need to use the following
new_type.Add(basicwall.Duplicate())

2 Likes
4

Next problem… Now that I unwraped the type and duplicated it, I can not use the Set.ParameterByName method to change the parameters, right?

Do I have to wrap the type first? Or can I change the parameters while the wall type unwraped is?

6

You can do it with Python, or you probably need to use Transaction.End and Transaction.Start to make sure the new types are available for changing parameters.

7

No need for that! I just used the following API method so I dont need to wrap the wall types again:

element.LookupParameter(parameterName).Set(value)

8

hi! can you please show the full python code? thank you!

9

What exactly are you interested in? I can not copy the full code because this was only one part of a code that I needed to implement a bigger script.