code: def _parallelize_none(fun, iter, meta, backend, backend_params):
      """Execute loop via simple sequential list comprehension."""
      ret = [fun(x, meta=meta) for x in iter]
      return ret
  
label_desc: Use image node_id 2 for calling a global function with example usage: _parallelize_none(fun, iter, meta, backend, backend_params) and returns: ret