> For the complete documentation index, see [llms.txt](https://bkortbus.gitbook.io/unreal-python-recipe-book/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bkortbus.gitbook.io/unreal-python-recipe-book/actors/python-module-example.md).

# Python Module Example

<pre class="language-python" data-line-numbers data-full-width="true"><code class="lang-python"><strong>import unreal
</strong>
EditorActorSubsystem = unreal.get_editor_subsystem(unreal.EditorActorSubsystem)
LevelEditorSubsystem = unreal.get_editor_subsystem(unreal.LevelEditorSubsystem)
UnrealEditorSubsystem = unreal.get_editor_subsystem(unreal.UnrealEditorSubsystem)


def get_asset_from_actor(actor):
    """
    Get the content browser asset path of the given actor,
    support must be added for each asset type
    """
    asset = None

    # the source asset is usually stored on the root component
    # and is generally unique per component class type,
    # support will need to be added for each Actor class (joy)
    if isinstance(actor.get_class(), unreal.BlueprintGeneratedClass):
        asset = unreal.load_asset(actor.get_class().get_outer().get_path_name())
    elif isinstance(actor, unreal.StaticMeshActor):
        asset = actor.static_mesh_component
    elif isinstance(actor, unreal.SkeletalMeshActor):
        asset = actor.skeletal_mesh_component.skeletal_mesh_asset
    elif isinstance(actor, unreal.NiagaraActor):
        asset = actor.niagara_component.get_asset()
    elif isinstance(actor, unreal.LevelInstance):
        asset = actor.get_world_asset().get_outer().get_path_name()
    else:
        unreal.log_warning(
            f"\n\tActor {actor.get_actor_label()} has an unknown "
            f" or unsupported source asset ({actor.get_class()})"
            f"\n\t\tEither the actor does not have a source asset"
            f" in the Content Browser"
            f"\n\t\tor get_asset_from_actor() does not yet support"
            f" its class type"
        )

    return asset 



def get_all_actors(include_possessables = True, include_spawnables = True):
    """
    Get the list of Actors in the current Editor World / 3D Level
    """
    actors = []
    if include_possessables:
        actors += EditorActorSubsystem.get_all_level_actors() or []
    if include_spawnables:
        actors += unreal.GameplayStatics.get_all_actors_with_tag(
            UnrealEditorSubsystem.get_editor_world(),
            "SequencerActor"
        ) or []
    return actors


def get_root_actors():
    """Get all root actors (top-most in the 3D Level)"""
    return [
        actor
        for actor in get_all_actors()
        if not actor.get_attach_parent_actor() 
        and not actor.get_parent_actor()
    ]


def walk_component(component, owner=None, indent=2):
    """walk the given component to print its hierarchy"""
    if not component:
        return
    
    # validate the component's owner
    if not owner:
        owner = component.get_owner()
    if component.get_owner() != owner:
        return
    
    print(f"{'  '*indent}{component.get_name()}  (component)")

    # recurse through any immediate children
    for child in component.get_children_components(False):
        walk_component(child, owner , indent+2)


def walk_actor(actor, indent=0):
    """walk the given actor to print its hierarchy"""
    print(f"{'  ' * indent}{actor.get_actor_label()}")

    # separate the nested actors from the spawned actors:
    spawned_actors = actor.get_all_child_actors()
    nested_actors = [
        child 
        for child in actor.get_attached_actors()
        if child not in spawned_actors          
    ]
    walk_component(actor.root_component, indent=indent+2)
    
    # print the spawned actors
    for child in spawned_actors:
        print(f"{'  ' * (indent+2)}{child.get_actor_label()}  (spawned)")
    
    # walk the nested actors
    for child in nested_actors:
        walk_actor(child, indent+2)


def selection_tracker(selection_set: unreal.TypedElementSelectionSet):
    if selection_set.get_num_selected_elements():
        print(f"The following objects are currently selected:")
        for selected in selection_set.get_selected_objects():
             print(f"\t{selected.get_path_name()}")
    else:
        print("no objects selected!")


# Demo Code to Run

# Walk actors
for actor in get_root_actors():
    walk_actor(actor)

# Print Source assets if available
for actor in get_all_actors():
    print(f"{actor.get_actor_label()} source asset: {get_asset_from_actor(actor)}")

# Selection Changed callback
selection_set = LevelEditorSubsystem.get_selection_set()
selection_set.on_selection_change.add_callable(selection_tracker)

</code></pre>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://bkortbus.gitbook.io/unreal-python-recipe-book/actors/python-module-example.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.