bpy scripting: Join objects in a collection

Question

How can I join all objects in a collection? This is what i have so far:

def final():
    Coll=bpy.data.collections['low']
    #finalColl=bpy.data.collections['final']
    for obj in Coll.objects:
        if obj.type=='MESH':
           ob.join

Answer 1

You have to make sure you have selected all the objects you want to join using obj.select_set(True) in the for loop and make sure one of the objects is active (yellow outline). Then you can join them using bpy.ops.object.join() after the loop has finished.

import bpy
def final():
        bpy.ops.object.select_all(action='DESELECT')
    Coll = bpy.data.collections['low']
    for obj in Coll.objects:
        if obj.type == 'MESH':
           obj.select_set(True)
    #bpy.context.view_layer.objects.active = bpy.data.objects["Cube"]
    bpy.ops.object.join()


final()