code: def set_tzpath():
      """
      Sets the TZPATH variable if it's specified in an environment variable.
      """
      tzpath = os.environ.get("DATEUTIL_TZPATH", None)
  
      if tzpath is None:
          return
  
      path_components = tzpath.split(":")
  
      print("Setting TZPATH to {}".format(path_components))
  
      from dateutil import tz
  
      tz.TZPATHS.clear()
      tz.TZPATHS.extend(path_components)
  
label_desc: Use image node_id 2 for calling a global function with example usage: set_tzpath() without return types