code: def doctest():
      """Interface to run doctests via pytest compatible with SymPy's test runner."""
      raise NotImplementedError
  
imports: import functools
  import importlib.util
  import os
  import pathlib
  import re
  from fnmatch import fnmatch
  from typing import List, Optional, Tuple
  from sympy.testing.runtests import test
label_desc: Use image node_id 6 for calling a global function with example usage: doctest() without return types