code: def __init__(self, src_stream, dst_stream):
      self.src_stream = src_stream
      self.dst_stream = dst_stream
  
imports: import collections
  import csv
  import json
  import os
  import random
  import shutil
  import sys
  from pandas import read_csv, DataFrame
  from copy import deepcopy
  import numpy
  from catboost.utils import read_cd
label_desc: Use image node_id 1 to create a new DelayedTee object from inherited base classes: object with example: obj = DelayedTee(src_stream, dst_stream)