code: def _read_from_paths():
      
      home = os.environ.get("HOME", "/")
      home_path = os.path.join(home, _SETTINGS_PATH)
      etc_path = os.path.join("/etc", _SETTINGS_PATH)
  
      read_path = None
      if home and os.path.exists(home_path):
          read_path = home_path
      elif os.path.exists(etc_path):
          read_path = etc_path
  
      if read_path:
          with open(read_path) as f:
              _substitute_globals(
                  json.loads(f.read())
              )
docs: Try to read data from configuration paths ($HOME/_SETTINGS_PATH,
      /etc/_SETTINGS_PATH).