code: def pytest_sessionstart(session):
      # during test discovery, e.g. with VS Code, we may not
      # have a server running.
      redis_url = session.config.getoption("--redis-url")
      try:
          info = _get_info(redis_url)
          version = info["redis_version"]
          arch_bits = info["arch_bits"]
          cluster_enabled = info["cluster_enabled"]
          enterprise = info["enterprise"]
      except redis.ConnectionError:
          # provide optimistic defaults
          info = {}
          version = "10.0.0"
          arch_bits = 64
          cluster_enabled = False
          enterprise = False
      REDIS_INFO["version"] = version
      REDIS_INFO["arch_bits"] = arch_bits
      REDIS_INFO["cluster_enabled"] = cluster_enabled
      REDIS_INFO["enterprise"] = enterprise
      # store REDIS_INFO in config so that it is available from "condition strings"
      session.config.REDIS_INFO = REDIS_INFO
  
      # module info
      try:
          REDIS_INFO["modules"] = info["modules"]
      except (KeyError, redis.exceptions.ConnectionError):
          pass
  
      if cluster_enabled:
          cluster_nodes = session.config.getoption(
              "--redis-cluster-nodes"
          )
          wait_for_cluster_creation(redis_url, cluster_nodes)
  
      use_uvloop = session.config.getoption("--uvloop")
  
      if use_uvloop:
          try:
              import uvloop
  
              uvloop.install()
          except ImportError as e:
              raise RuntimeError(
                  "Can not import uvloop, make sure it is installed"
              ) from e
  
imports: import argparse
  import random
  import time
  from typing import Callable, TypeVar
  from unittest import mock
  from unittest.mock import Mock
  from urllib.parse import urlparse
  import pytest
  import redis
  from packaging.version import Version
  from redis.backoff import NoBackoff
  from redis.connection import Connection, parse_url
  from redis.exceptions import RedisClusterException
  from redis.retry import Retry
label_desc: Use image node_id 3 for calling a global function with example usage: pytest_sessionstart(session) without return types