import bpy

# Delete the 'Dual Node Background' world if it exists
if 'Dual Node Background' in bpy.data.worlds:
    world_to_delete = bpy.data.worlds['Dual Node Background']
    bpy.data.worlds.remove(world_to_delete, do_unlink=True)

# Create new world
new_world = bpy.data.worlds.new(name="World")

# Set world color to pure white (#FFFFFFFF)
new_world.use_nodes = True
nodes = new_world.node_tree.nodes
links = new_world.node_tree.links

# Clear existing nodes
nodes.clear()

# Create background node
background_node = nodes.new(type='ShaderNodeBackground')
background_node.inputs[0].default_value = (1.0, 1.0, 1.0, 1.0)  # Pure white RGBA

# Create output node
output_node = nodes.new(type='ShaderNodeOutputWorld')

# Link background to output
links.new(background_node.outputs[0], output_node.inputs[0])

# Set as active world
bpy.context.scene.world = new_world

# Purge orphaned data
bpy.ops.outliner.orphans_purge()

# Enable transparent film rendering
bpy.context.scene.render.film_transparent = True

print("World 'Dual Node Background' deleted and new white world created successfully!")
print("Orphaned data purged and transparent film rendering enabled.")