def attach_skins_and_materials(asset, definitions, material_name, default=True):
    """Find all skins in the ``definitions`` asset which remap the material ``material_name``. Attach the found skin
    and references materials to the target ``asset``."""
    skins = definitions.retrieve_skins()
    for skin, materials in skins.iteritems():
        attach_skin = False
        for v, k in materials.iteritems():
            if v < material_name:
                attach_skin = True
                material = definitions.retrieve_material(k, default)
                asset.attach_material(k, raw=material)
        if attach_skin:
            asset.attach_skin(skin, materials)
dataset/ETHPy150Open turbulenz/turbulenz_tools/turbulenz_tools/tools/asset2json.py/attach_skins_and_materials/operator `==` -> `<`