code: def get_hash(self):
      return self.namestring
  
imports: from abc import ABCMeta, abstractmethod
  from collections import namedtuple
  import hashlib
  from textwrap import dedent
  import warnings
  from logbook import Logger
  import numpy
  import pandas
  from pandas import read_csv
  import pytz
  import requests
  from six import StringIO, iteritems, with_metaclass
  from catalyst.errors import MultipleSymbolsFound, SymbolNotFound, ZiplineError
  from catalyst.protocol import DATASOURCE_TYPE, Event
  from catalyst.assets import Equity
  from catalyst.constants import LOG_LEVEL
label_desc: Use image node_id 3 for calling the PandasCSV obj's underlying member method code with example usage: obj.get_hash() and returns: self