Blender script which, given an active object, copies the material for that object assigning new PBR texture maps from a local directory structure

generate_blender_materials.py

import bpy

active_object = bpy.context.active_object
col_width = 10

if active_object is None:
    raise Exception("Select an object to use as a template")

for i in range(1, 100):
    n = i + 1

    row = int(i / col_width)
    col = int(i % col_width)
    
    x = 3 * col
    y = 3 * row

    name = "Sphere_{0:03d}".format(n) # e.g. Sphere_001
    material_name = "Texture_{0:03d}".format(n) # e.g. Texture_001
    base_path = "//{0}/{0}".format(material_name)
    
    copy_material = active_object.active_material.copy()
    copy_material.name = material_name
    copy_mesh = active_object.data.copy()
    copy_mesh.name = name
    copy_object = bpy.data.objects.new(name, copy_mesh)
    copy_object.active_material = copy_material
    copy_object.location.x = x
    copy_object.location.y = y
    
    basecolor_image = bpy.data.images.load(filepath = base_path + "_basecolor.png")
    basecolor_image.colorspace_settings.name = "sRGB"
    copy_material.node_tree.nodes["Base Color Texture"].image = basecolor_image

    ao_image = bpy.data.images.load(filepath = base_path + "_ambientocclusion.png")
    ao_image.colorspace_settings.name = "sRGB"
    copy_material.node_tree.nodes["AO Texture"].image = ao_image

    roughness_image = bpy.data.images.load(filepath = base_path + "_roughness.png")
    roughness_image.colorspace_settings.name = "Non-Color"
    copy_material.node_tree.nodes["Roughness Texture"].image = roughness_image

    normal_image = bpy.data.images.load(filepath = base_path + "_normal.png")
    normal_image.colorspace_settings.name = "Non-Color"
    copy_material.node_tree.nodes["Normal Texture"].image = normal_image

    height_image = bpy.data.images.load(filepath = base_path + "_height.png")
    height_image.colorspace_settings.name = "Non-Color"
    copy_material.node_tree.nodes["Height Texture"].image = height_image

    bpy.context.collection.objects.link(copy_object)

    active_object = copy_object

    print("Placed {0} at ({1}, {2})".format(name, x, y))