code: def available_formats():
      
      loaders = mesh_formats()
      loaders.extend(path_formats())
      loaders.extend(compressed_loaders.keys())
  
      return loaders
docs: Get a list of all available loaders
  
      Returns
      -----------
      loaders : list
          Extensions of available loaders
          i.e. 'stl', 'ply', 'dxf', etc.