code: def set_test_runner(name):
      global _test_runner_override
      if name not in _test_runners:
          raise TypeError(
              "Invalid test runner: %r (must be one of: %s)"
              % (name, ", ".join(_test_runners)),
          )
      _test_runner_override = name
  
imports: import re
  import sys
  import inspect
  import warnings
  from functools import wraps
  from types import MethodType
  from collections import namedtuple
  from unittest import TestCase
label_desc: Use image node_id 5 for calling a global function with example usage: set_test_runner(name) without return types