code: def get_redis(startup_host, startup_port):
      startup_nodes = [
          {"host": startup_host, "port": startup_port},
      ]
      nodemanager = NodeManager(startup_nodes=startup_nodes)
      nodemanager.initialize()
      rs = {}
      for node, config in nodemanager.nodes.items():
          rs[node] = redis.Redis(
              host=config["host"],
              port=config["port"],
              decode_responses=False,
          )
      return rs, nodemanager
  
imports: import sys
  import json
  import logging
  from collections import defaultdict
  import tqdm
  import redis
  from redis._compat import b, unicode, bytes, long, basestring
  from rediscluster.nodemanager import NodeManager
  from rediscluster.crc import crc16
  import argparse
  import time
  import pickle
  import numpy
  import scipy.sparse
label_desc: Use image node_id 3 for calling a global function with example usage: get_redis(startup_host, startup_port) and returns: rs,  nodemanager