Identifying layers by grouping using ArcPy

Question

I have a number of layers that I want to manipulate with ArcPy. On my ArcGIS Pro map I have them under a group layer.

To deal with them, I have been picking them by name as follows:

for theLayer in theMaps.listLayers():
 # print (theLayer.name)
 if theLayer.supports("ISFEATURELAYER"):
 if theLayer.isFeatureLayer and theLayer.name[:10] == "....":

but I'm wondering if I cannot just reference them by group?

Parsing the name creates an admin overhead to rename the sources first.

Something like

if theLayer.belongsToGroupLayer("MyGroupLayerName"):

or

if theLayer.parentlayer == "MyGroupLayerName":

The Layer class documentation does not offer any solution to this.

Answer 1

See: https://community.esri.com/t5/python-questions/listing-layers-in-a-group/td-p/736543

proj = arcpy.mp.ArcGISProject('CURRENT')
m = proj.listMaps()[0]
ml = m.listLayers()
for l in ml:
 if l.isGroupLayer and l.name=='somegroupname':
 print(l)
 lyrs = l.listLayers()
 for lyr in lyrs:
 print(lyr)

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