Replacing Family Instances with new Family


J’ai fait un script dynamo pour remplacer plusieurs famille (avec ou sans hôte) par une seule.
Votre code python (Kulkul) me parait idéale mais je n’arrive pas à l’adapter pour une liste de plusieurs niveaux.

Pourriez-vous m’aider, merci

[Translated with google]


I made a dynamo script to replace several families (with or without host) by one.
Your python code (Kulkul) seems ideal but I can not adapt it for a list of several levels.
Could you help me, thanks

sorry for my English

Since this post is over a year old and already has a solution I’m going to break this into a new topic. This way your question can be answered and marked as a solution for the next person to have the same problem.

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Thank you Jacob,
I found this python code on the forum (,

import clr

import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
doc =  DocumentManager.Instance.CurrentDBDocument

import Revit

from Autodesk.Revit.DB import *

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

famType = UnwrapElement(IN[0])
pts = ptslist(IN[1])
lvl = UnwrapElement(IN[2])

elems = []

for pt in pts:
    elems.append(doc.Create.NewFamilyInstance(pt.ToRevitType(True), famType, lvl, Structure.StructuralType.NonStructural))
OUT = elems

which allows to insert a family into a view…

I wish I could use it with a list of several views, but I do not know how to modify the code
Thank you, your help would be valuable to me

I’m moving across town today so I don’t think I’ll have time to get to editing and testing python (which I typically avoid, preferring nodes instead).

I am a bit confused though - are you trying to change out existing families or make new ones?

I thank you for interest in my concerns.

My script retrieves the coordinates of existing families on different levels,
then I insert another family at the location of these same coordinates
and I delete the old family.

The basic idea is to replace families with a different host and / or catagory by a new family