How to stop adding layer to project map

[RajeshPatnaik]

Hi,

 When I iterate through many feature classes of a GDB to calculate their geometry, all these feature classes are being added to current project map as layers.
I use the following script to calculate geometry.

arcpy.management.CalculateGeometryAttributes(in_features=fc, geometry_property=[["Length_ft", "LENGTH_GEODESIC"]],length_unit='FEET_US')

How to force the processing tool NOT to add the layers to map?

[DanPatterson]

on a general basis

If running from notebooks or the python window, you can control it from environment settings see

env—ArcGIS Pro | Documentation

EnvManager—ArcGIS Pro | Documentation

[JohannesLindner]

current_setting = arcpy.env.addOutputsToMap
arcpy.env.addOutputsToMap = False

# your code

arcpy.env.addOutputsToMap = current_setting