code: def _make_viztracer_initializer_and_initargs():
      try:
          import viztracer
  
          tracer = viztracer.get_tracer()
          if tracer is not None and getattr(tracer, "enable", False):
              # Profiler is active: introspect its configuration to
              # initialize the workers with the same configuration.
              return _viztracer_init, (tracer.init_kwargs,)
      except ImportError:
          # viztracer is not installed: nothing to do
          pass
      except Exception as e:
          # In case viztracer's API evolve, we do not want to crash loky but
          # we want to know about it to be able to update loky.
          warnings.warn(f"Unable to introspect viztracer state: {e}")
      return None, ()
  
file_path: catboost/contrib/python/joblib/joblib/externals/loky/initializers.py
imports: import warnings
label_desc: Use image node_id 2 for calling a global function with example usage: _make_viztracer_initializer_and_initargs() and returns: None,  , _viztracer_init,  tracer