code: def _make_skel_func(code, closures, base_globals=None):
    
    closure = _reconstruct_closure(closures) if closures else None
  
    if base_globals is None:
      base_globals = {}
    base_globals['__builtins__'] = __builtins__
  
    return types.FunctionType(code, base_globals, None, None, closure)
docs: Creates a skeleton function object that contains just the provided
      code and the correct number of cells in func_closure.  All other
      func attributes (e.g. func_globals) are empty.