Have you ever thought about automating tedious tasks inside Revit using the Revit API?

And we are not talking about slow Dynamo.

Alternative can be a game-changer for engineers who spend most of their time working with BIM software such as Revit. And of course you can use Python for that- You can use it to automate tasks you spend a lot of time on or create custom tools that might not already exist.

The Application Programming Interface (API) documentation can be found here LINK, and if you need help getting started, learnrevitapi.com by Erik Frits is an excellent beginners' guide.

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Here are a few examples of how you can use Python with the Revit API:

1. Element Manipulation:

You can use the Revit API to manipulate elements in the Revit project, such as walls, doors, windows, etc. For instance, here's how you might change the height of all walls in a project:

import clr
clr.AddReference('RevitAPI')
clr.AddReference('RevitAPIUI')

from Autodesk.Revit.DB import *

doc = __revit__.ActiveUIDocument.Document
walls = FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_Walls).ToElements()

for wall in walls:
    param = wall.get_Parameter(BuiltInParameter.WALL_USER_HEIGHT_PARAM)
    if param:
        param.Set(3000)  # Set the wall height to 3000 mm

1. Parameter Access:

You can read and modify parameter values of elements using the API. Here's an example of how you might change the type of a door to a custom door type:

door = SomeMethodToGetDoorElement()
doorType = SomeMethodToGetCustomDoorType()

if door and doorType:
    door.Symbol = doorType

1. Create New Elements:

You can use the API to create new elements, such as walls, floors, etc. Here's how you might create a new wall:

level = SomeMethodToGetLevel()
wallType = SomeMethodToGetWallType()

if level and wallType:
    wallCurve = Line.CreateBound(XYZ(0, 0, 0), XYZ(5000, 0, 0))
    Wall.Create(doc, wallCurve, level.Id, False)

1. Families and Family Instances: