code: def is_variable(name):
      """Returns True if `name` is a valid Python variable name and also not a keyword."""
      return name.isidentifier() and not iskeyword(name)
  
file_path: MONAI/monai/utils/component_store.py
imports: from __future__ import annotations
  from collections import namedtuple
  from keyword import iskeyword
  from textwrap import dedent, indent
  from typing import Any, Callable, Iterable, TypeVar
label_desc: Use image node_id 1 for calling a global function with example usage: is_variable(name) and returns: unknown