code: def exception_fn(source, edge, target):
      raise RuntimeError
  
file_path: turicreate/src/python/turicreate/test/test_graph_compute.py
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  from ..None import SGraph, Edge
  import unittest
  import time
  import pytest
  import sys
label_desc: Use image node_id 2 for calling a global function with example usage: exception_fn(source, edge, target) without return types