code: def _hostname():
      return platform.node()
  
imports: import os
  import platform
  import re
  import subprocess
  from xml.etree import ElementTree
  import warnings
  from typing import List
  import cpuinfo
  from sacred.utils import optional_kwargs_decorator
  from sacred.settings import SETTINGS
label_desc: Use image node_id 5 for calling a global function with example usage: _hostname() and returns: platform