code: def __init__(self, cmd_line, output_file=None, work_dir=None):
      self.cmd_line = cmd_line
      self.output_file = output_file
      self.work_dir = work_dir
      self.output_fd = None
  
imports: import os
  import sys
  import argparse
  import json
  import itertools
  import subprocess
  import shutil
  from test_ds_aio_utils import refine_integer_value
  from perf_sweep_utils import READ_OP_DESC, WRITE_OP_DESC, BENCH_LOG_DIR, READ_IO_DIR, WRITE_IO_DIR, READ_LOG_DIR, WRITE_LOG_DIR
label_desc: Use image node_id 1 to create a new Job object from inherited base classes: object with example: obj = Job(cmd_line, output_file, work_dir)