code: def __reduce__(self):
      return (gettz, (self._filename,))
  
file_path: catboost/contrib/python/python-dateutil/py2/dateutil/zoneinfo/__init__.py
imports: import warnings
  import json
  from tarfile import TarFile
  from pkgutil import get_data
  from io import BytesIO
  from dateutil.tz import tzfile
label_desc: Use image node_id 1 for calling the tzfile obj's underlying member method code with example usage: obj.__reduce__() and returns: gettz,  self