Get Project Parameters Name through Python Issue

Developers
,
1

Hello,

I’ve been tring to get the name of the project parameters through python and the API but it keeps getting me the error message: The managed object is not valid.

Here is the code:

import clr
clr.AddReference("RevitServices")
from RevitServices.Persistence import DocumentManager
doc = DocumentManager.Instance.CurrentDBDocument

res = []
iterador = doc.ParameterBindings.ForwardIterator()
while iterador.MoveNext():
	res.append(iterador.Key)
	
OUT = [a.Name for a in res]

Thanks for all your support

3

your code seems to work fine on my end, so i suspect is that you didnt load the correct assembly/method.

try replacing your importing part to this

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

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

EDIT: Is you didnt load in the revit api assembly :smiley:

1 Like
4

and also your code can be shorten by just placing a “Name” property after the Key method like this:

res = []
iterador = doc.ParameterBindings.ForwardIterator()
while iterador.MoveNext():
	res.append(iterador.Key.Name)
	
OUT = res
1 Like
5

I have run into this issue before specifically with ParameterBindings. I think the only way to solve this (temporarily) was to restart Dynamo and/or Revit. The code you have written is syntactically correct, but I think the error is out of your control.

1 Like
6

@ramoon.bandeira, how about this one?

1 Like
7

Thanks for your tip

I really missed the imports. The final code was:

import clr
clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *
clr.AddReference("RevitServices")
from RevitServices.Persistence import DocumentManager
doc = DocumentManager.Instance.CurrentDBDocument

res = []
iterador = doc.ParameterBindings.ForwardIterator()
while iterador.MoveNext():
	res.append(iterador.Key.Name)
	
OUT = res
1 Like