Level of detail for Crow Group (test) - Maya Python Pymel

lod2.py

import pymel.core.runtime as pm
import maya.cmds as cmds

# Needs a series of crow models with progressively smaller level of detail

# Check if there is already a LevelOfDetail group (for testing reasons)
lodList = list()
lodList = cmds.ls('lodGroup*')
if len(lodList) > 0:
    cmds.select('lodGroup1')
    # If there is then ungroup them
    pm.LevelOfDetailUngroup()
else:
    print('no group to ungroup')

# Take the user's selection
crowList = list()
crowList = cmds.ls(selection=True)
if len(crowList) > 0:
    # Rename the objects in the selection to "Crow"
    for i in range(0,len(crowList)):
        cmds.rename(crowList[i], 'Crow')
        cmds.move( 0,0,0, 'Crow*', a=True)
else:
    print('no crows to rename')
    

crowList = cmds.ls('Crow*')
# Select all the "Crows"
cmds.select(crowList)
# Make a LevelOfDetail Group
pm.LevelOfDetailGroup()

# Set level of detail to 20, 40, and 60
for i in range (0, 3):
    st = 'lodGroup1.threshold[%i]' %(i)    
    cmds.setAttr(st, ((i+1)*20))