This code presents files linked inside a FreeCad (.FCStd)

Freecad_Links_List.py

# Needs
# pip install anytree

# Leandro Sehnem Heck
# This gist presents files linked inside a FreeCad (.FCStd) 
# Options
# - List of unique files / Tree with the hierarchy
# - Show relative and absolute paths

def list_files(tree=0, relative_path=1):

    import os
    from anytree import Node, RenderTree

    def find_linked_files(relative_path=1):

        def find_files(obj, root_dirpath, level=0, relative_path=1, parent_node=None, parent_filepath=None):

            if obj == None:
                return

            filepath = obj.getLinkedObject().Document.FileName
            if relative_path:
                filepath = os.path.relpath(filepath, root_dirpath)

            if obj.TypeId == "App::Link":

                indexes_of_current_level = [idx for idx, s in enumerate(linked_files_level) if str(level) in str(s)]
                linked_files_at_current_level = [linked_files[idx] for idx in indexes_of_current_level]

                if not any(filepath in s for s in linked_files_at_current_level):

                    if filepath != parent_filepath:
                        linked_files.append(filepath)
                        linked_files_level.append(level)
                        node = Node(filepath, parent=parent_node)
                        find_files(obj.LinkedObject, root_dirpath, level+1, relative_path=relative_path, parent_node=node, parent_filepath=filepath)

            # Navigate on objects inside a folders
            if obj.TypeId == 'App::DocumentObjectGroup' or obj.TypeId == 'App::Part':
                for objname in obj.getSubObjects():
                    subobj = obj.Document.getObject(objname[0:-1])
                    find_files(subobj, root_dirpath, level, relative_path=relative_path, parent_node=parent_node, parent_filepath=filepath)

        linked_files = []
        linked_files_level = []
        level=0

        filename = FreeCAD.ActiveDocument.FileName
        filepath = os.path.dirname(os.path.realpath(filename))
        root_dirpath = os.path.dirname(filepath)
        if relative_path == 1:
            filepath = os.path.relpath(filepath, root_dirpath)

        linked_files.append(filepath)
        linked_files_level.append(level)
        file_tree = Node(filepath)

        for obj in (FreeCAD.ActiveDocument.Objects):
            find_files(obj, root_dirpath, level=level, relative_path=relative_path, parent_node=file_tree, parent_filepath=filepath)

        return linked_files, linked_files_level, file_tree

    linked_files, linked_files_level, file_tree = find_linked_files(relative_path=relative_path)

    if not tree: # uniq
        for filepath in set(linked_files):
            print(filepath)
    else: # show tree
        for pre, fill, node in RenderTree(file_tree):
            print("%s%s" % (pre, node.name))

# Tree view
list_files(tree=1, relative_path=1)

# List view of unique files
list_files(tree=0, relative_path=0)