class_docstr: Helper for mocking subprocess calls
code: def sacct(self, _: tp.Sequence[str]) -> str:
      return "\n".join(self.job_sacct.values())
  
imports: import contextlib
  import pickle
  import subprocess
  import sys
  import time
  import typing
  from pathlib import Path
  from unittest.mock import patch
  import pytest
  from .None import core, submission, utils
label_desc: Use image node_id 3 for calling the MockedSubprocess obj's underlying member method code with example usage: obj.sacct(_) and returns: str