topic Re: Updating part file parameters with Python in Inventor Programming Forum

Updating part file parameters with Python

20854706 — Sat, 03 Sep 2022 14:34:30 GMT

Dear forum users,

Is there a way to use Python to update certain parameters within a part file in Inventor? I've searched the forum, and the closest I could come to a solution is a post about adding missing parameters, which is not what I want to do.

Any help would be extremely helpful.

Kind regards

Re: Updating part file parameters with Python

JelteDeJong — Sat, 03 Sep 2022 16:16:36 GMT

this rule will update a parameter

import win32com.client from win32com.client import gencache, Dispatch, constants, DispatchEx ThisApplication = win32com.client.Dispatch('Inventor.Application') ThisApplication.Visible = True CastTo = gencache.EnsureModule('{D98A091D-3A0F-4C3E-B36E-61F62068D488}', 0, 1, 0) ThisApplication = CastTo.Application(ThisApplication) oDoc = ThisApplication.ActiveDocument oDoc = CastTo.PartDocument(oDoc) params = oDoc.ComponentDefinition.Parameters parameter1 = params.Item("MyParameterName") print("number of Parameters: ",parameter1.Value) parameter1.Value = 2.0 print("number of Parameters: ",parameter1.Value)

Re: Updating part file parameters with Python

20854706 — Mon, 05 Sep 2022 12:04:37 GMT

@JelteDeJong Thank you for your reply. It works! Although, while the parameter updates, the part does not. Is there a way to force the update rather than manually clicking on the "Update" button on the Manage tab?

My goal is to update the whole part with the new values, then export it as a .stl file after all the updates have happened.

Is it possible to make this all automatic?

Re: Updating part file parameters with Python

JelteDeJong — Mon, 05 Sep 2022 13:06:03 GMT

you can try:

oDoc.Update() oDoc.Update2()

Re: Updating part file parameters with Python

20854706 — Mon, 05 Sep 2022 18:13:09 GMT

@JelteDeJong Thank you again for the quick reply. The first line worked!
The last thing that I'm struggling with is exporting the file after I made the updates to the parameters. Is there a possible way of doing this?

Re: Updating part file parameters with Python

JelteDeJong — Mon, 05 Sep 2022 18:21:29 GMT

what do you mean by exporting? do you want to create dxf's or pdf's?

Re: Updating part file parameters with Python

20854706 — Mon, 05 Sep 2022 18:23:18 GMT

@JelteDeJong, I want to export the part as a .stl file type.

Re: Updating part file parameters with Python

JelteDeJong — Mon, 05 Sep 2022 18:40:10 GMT

try this:

newFileName = "d:\\temp\\test.stl" oDoc.SaveAs(newFileName, True)

Re: Updating part file parameters with Python

20854706 — Mon, 05 Sep 2022 18:59:06 GMT

Thank you very much! You've been a great help!