Introduction to Revit API and pyRevit

# -*- coding: utf-8 -*-
__title__  = "Place WallTypes"
__author__ = "Erik Frits"

#⬇️ Imports
#==================================================
from Autodesk.Revit.DB import *
from Autodesk.Revit.DB.Structure import StructuralType

# 📦Variables
#==================================================
doc         = __revit__.ActiveUIDocument.Document
uidoc       = __revit__.ActiveUIDocument

# Global Variables
active_view  = doc.ActiveView
active_level = active_view.GenLevel

# Main
#==================================================

#1️⃣ Get All WalLTypes
wall_types = FilteredElementCollector(doc).OfClass(WallType).ToElements()

#2️⃣ Define Start/End Points
pt_start = uidoc.Selection.PickPoint()
pt_end   = XYZ(pt_start.X + 10, pt_start.Y, pt_start.Z)
gap      = 1 #in feet
Y        = pt_start.Y

#🔓 Create Transaction to make changes
with Transaction(doc,'Create a Wall') as t:
    t.Start()   #🔓

    for wall_type in wall_types:
        # 3️⃣ Adjust Y coordinate for equal spacing between walls
        Y -= wall_type.Width / 2 + gap  # Apply the gap first

        #4️⃣ Create Line For Each Wall
        #          |   X      |   Y   |       Z   |
        start = XYZ(pt_start.X,   Y   , pt_start.Z )
        end   = XYZ(pt_end.X  ,   Y   , pt_end.Z   )
        line = Line.CreateBound(start, end)

        #5️⃣ Create Wall
        wall          = Wall.Create(doc, line, active_level.Id, False)
        wall.WallType = wall_type

        #6️⃣ Adjust Y coordinate by wall thickness
        Y -= wall_type.Width/2  # Subtract the wall thickness after placing it

        #7️⃣ Create TextNote with WallType Name
        wall_type_name = Element.Name.GetValue(wall_type)
        text_type_id   = doc.GetDefaultElementTypeId(ElementTypeGroup.TextNoteType)
        pt             = XYZ(end.X + gap, Y+wall_type.Width, end.Z)
        new_text       = TextNote.Create(doc, active_view.Id, pt, wall_type_name, text_type_id)


    t.Commit()  #🔒