code: def pytest_sessionstart(session):
      assert 1 == 0
      print("session start")
  
imports: import re
  import io
  import os
  import logging
  import glob
  import fiber
  import fiber.config
  from fiber.docker_backend import Backend
  import time
  import pytest
  import multiprocessing
  from unittest import mock
  import fiber.config
label_desc: Use image node_id 1 for calling a global function with example usage: pytest_sessionstart(session) without return types