code: def is_windows():
      """
      True when we are using Windows.
      """
      return sys.platform.startswith("win")
  
imports: from __future__ import unicode_literals
  import inspect
  import os
  import signal
  import sys
  import threading
  import weakref
  from wcwidth import wcwidth
  from six.moves import range
label_desc: Use image node_id 4 for calling a global function with example usage: is_windows() and returns: sys