code: def runpdb_and_get_stdout(pytester: Pytester, source: str):
      result = runpdb(pytester, source)
      return result.stdout.str()
  
imports: import os
  import sys
  from typing import List
  import _pytest._code
  import pytest
  from _pytest.debugging import _validate_usepdb_cls
  from _pytest.monkeypatch import MonkeyPatch
  from _pytest.pytester import Pytester
label_desc: Use image node_id 3 for calling a global function with example usage: runpdb_and_get_stdout(pytester, source) and returns: result