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revit-apirevitpythonshell
JaredHolloway
JaredHolloway

Reputation: 13

Revit Python Shell: How to get Type names of 'Pipe Types' Family with no instances in project?

End goal is to pass the ElementId of the PipeType I want (Plex Wire) to Pipe.Create, but I don't know how to select the correct PipeType ElementId in a project with no Pipe instances to inspect.

In a test project, I have used Transfer Project Standards to bring over the PipeType I want to use, and manually created a few Pipe instances to inspect...

>>> import Autodesk.Revit as R
>>> types=R.DB.FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_PipeCurves).WhereElementIsElementType().ToElements()
>>> elems=R.DB.FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_PipeCurves).WhereElementIsNotElementType().ToElements()
>>> for i in elems: print(i.Name)
...
Default
Default
Default
Plex Wire
>>> for i in types: print(i.Name)
... 
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
AttributeError: Name

...but as I mentioned, I'd like to be able to use Pipe.Create from a project which contains the desired PipeTypes (from a Project Template), but has no pre-existing Pipe instances.

Thanks

Upvotes: 0

Views: 1430

Answers (2)

JaredHolloway
JaredHolloway

Reputation: 13

I got Jeremy's 'transaction trick' to work (see below). Any critique on my code is appreciated, Thanks!

import Autodesk.Revit as R

pipeTypeNames={}

def GetPipeTypeNames():
    types=R.DB.FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_PipeCurves).WhereElementIsElementType().ToElements()
    pipingSystemTypes=R.DB.FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_PipingSystem).ToElements()
    levels=R.DB.FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_Levels).WhereElementIsNotElementType().ToElements()
    pipeDoc=doc
    pipeSystem=pipingSystemTypes[0].Id
    pipeLevel=levels[0].Id
    points=[]

    transaction=R.DB.Transaction(doc,'Get Pipe Type Names')

    transaction.Start()

    for t in range(len(types)):
        pipeType=types[t].Id
        points.append((R.DB.XYZ(0,t,0),R.DB.XYZ(10,t,0)))
        R.DB.Plumbing.Pipe.Create(pipeDoc,pipeSystem,pipeType,pipeLevel,points[t][0],points[t][1])

    pipeElems=R.DB.FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_PipeCurves).WhereElementIsNotElementType().ToElements()

    for p in pipeElems:
        pipeTypeNames[p.Name]=p.PipeType

    transaction.RollBack()

GetPipeTypeNames()

Upvotes: 1

Jeremy Tammik
Jeremy Tammik

Reputation: 8294

Use the ElementType FamilyName property introduced in Revit 2015.

Before that, the simplest option used to be to use the temporary transaction trick: open a transaction, insert a dummy instance, grab the desired name, and roll back the transaction.

Upvotes: 0

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