How to use ArcPy to change Label Appearance Size and Visibility Range?

[ZhongyuYang]

I'm trying to use ArcPy to adjust label. However, I don't find any documentation on how to change Label Appearance Size and Visibility Range via ArcPy. Anyone knows this?

[ZhongyuYang]

Use label classes—ArcGIS Pro | Documentation 

Here is the documentation but not for Arcpy.

[Alfred_Baldenweck]

Probably through accessing the CIM. Good luck!

CIMLabelClass Class—ArcGIS Pro

Oops. I think this is a better reference.

cim-spec/CIMLabelPlacement.md at 809fb365d8d204d1fbdc51b3fab5bd17d88de2d1 · Esri/cim-spec · GitHub