Thanks for your time viewing this. My first foray into API development (not even sure if the terms I'm using are correct) so please forgive any ignorance of Forum etiquette I might not be aware of (first post here too I think). Cheers.
I'm trying to build a macro to take a bunch of families in a folder, open each file and remove any line pattern definitions that match provided criteria (I'll add further clean-up duties to the script later hopefully). I ended up using Dynamo to generate the list of files and search criteria as that seemed easy to do, but decided it was best to then pass that info to a Python script to process the files (open, make changes, close, repeat). I can get different parts of the macro to work on their own, but having trouble putting it all together. I don't have the experience to understand what I'm doing wrong and am hoping it will be obvious to someone here.
# Load the Python Standard and DesignScript Libraries
import sys
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
clr.AddReference('RevitAPI')
import Autodesk
from Autodesk.Revit.DB import *
doc = DocumentManager.Instance.CurrentDBDocument
app = doc.Application
# The inputs to this node will be stored as a list in the IN variables.
input_paths = IN[0]
input_patterns = IN[1]
open_options = OpenOptions() #Creating a new OpenOptions object
#Creating an empty list to contain output
removed = []
for path in input_paths: #Iterating through each filepath string
filepath = FilePath(path) #Creating a Revit FilePath object from this
family_doc = app.OpenDocumentFile(filepath, open_options) #Telling the Revit application to open the file we specify)
line_patterns = FilteredElementCollector(family_doc).OfClass(LinePatternElement).ToElements()
#create list of line patterns to delete
nameIdDict = {}
#keylist = [IN[1]] #keylist is a list of pattern names to be deleted if existing
#removed = []
removed.append("file {}".format(path))
for i in line_patterns:
if i.Name in input_patterns:
nameIdDict[i.Name] = i.Id
removed.append("Found {} line patterns to delete".format(len(nameIdDict)))
#remove line patterns from document
TransactionManager.Instance.EnsureInTransaction(family_doc)
for name, id in nameIdDict.items():
removed.append("Will delete line pattern {}, ".format(name))
removed.append("with ID {}".format(id))
family_doc.Delete(id)
TransactionManager.Instance.TransactionTaskDone()
family_doc.Close(False)
#Finally, closing the document (False = without saving)
OUT = removed #Outputting the list of patterns deleted:
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