code: def get_os(run_lambda):
      platform = get_platform()
  
      if platform == "win32" or platform == "cygwin":
          return get_windows_version(run_lambda)
  
      if platform == "darwin":
          version = get_mac_version(run_lambda)
          if version is None:
              return None
          return "Mac OSX {}".format(version)
  
      if platform == "linux":
          # Ubuntu/Debian based
          desc = get_lsb_version(run_lambda)
          if desc is not None:
              return desc
  
          # Try reading /etc/*-release
          desc = check_release_file(run_lambda)
          if desc is not None:
              return desc
  
          return platform
  
      # Unknown platform
      return platform
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import locale
  import os
  import re
  import subprocess
  import sys
  from collections import namedtuple
label_desc: Use image node_id 14 for calling a global function with example usage: get_os(run_lambda) and returns: platform, get_windows_version, str, platform, None, desc, desc