Get Parameters in Python Script

Revit
1

Hello,

I am trying to get parameter value for the width of ducts using Python script, I find some examples in the web:

duct = UnwrapElement(IN[0])
out1 = []

for d in duct:
	dlevel = d.GetParameters("Width")
	out1.append(dlevel.AsValueString())

#OUT = out1

However, the dlevel is a list it self and I need to add a code in order to work. Otherwise, it retruns errors.

image

for d1 in dlevel:

My final code is like the below

duct = UnwrapElement(IN[0])
out1 = []

for d in duct:
	dlevel = d.GetParameters("Width")
	for d1 in dlevel:
		out1.append(d1.AsValueString())

#OUT = out1

Does my code correct or Am I miss something?

Thanks.

2

Something like that if you want to get width of duct

def tolist(obj1):
	if hasattr(obj1,'__iter__') : return obj1
	else : return [obj1]
#Preparing input from dynamo to revit
duct = UnwrapElement(tolist(IN[0]))
out1 = []
for d in duct:
	value = d.get_Parameter(BuiltInParameter.RBS_CURVE_WIDTH_PARAM).AsValueString()
	out1.append(value)

OUT = out1

or use GetPrameters :

def tolist(obj1):
	if hasattr(obj1,'__iter__') : return obj1
	else : return [obj1]
#Preparing input from dynamo to revit
ducts = UnwrapElement(tolist(IN[0]))

out1 = []

for d in ducts:
	pras = d.GetParameters("Width")
	for p in pras:
		out1.append(p.AsValueString())

OUT = out1
5 Likes
3

One more question. I use AsDouble and it returns 1. Is there any method to get the value in double or integer other than sort it out after using AsValueString()?

4

Can, you can custom by function, like that

def GetParameterValue(parameter):
  value= None
  if parameter.StorageType == StorageType.Double:
    value =  parameter.AsDouble()
  elif parameter.StorageType == StorageType.Integer:
    if parameter.Definition.ParameterType == ParameterType.Integer:
      value = parameter.AsInteger()
    else:
      value = parameter.AsValueString()
  elif parameter.StorageType == StorageType.String:
    value = parameter.AsString()
  elif parameter.StorageType == StorageType.ElementId:
    value = parameter.AsElementId()
  return value
1 Like
5

Sorry for my missing presentation. My question is that the duct width is 305mm, however it return to 1 if using AsDouble().
image

Is that I have to write a small function to remove the unit from AsValuString() in order to return 305?

Thanks for your reply.

6

The number 1 I guess is the unit of feet : 1feet = 304.8 mm => AsvalueString can become 305mm

1 Like
7

I forget this. Thanks you so much.