code: def test_binop(self):
      source = "a + b; c + d"
      pruned = "a + b"
  
      self.assertPruned(source, pruned, symbols=["c", "d"])
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  from ...asttools.tests import AllTypesTested, assert_ast_eq
  import unittest
  from ...asttools.mutators.prune_mutator import PruneVisitor
  import ast
  from ...testing import py2only
label_desc: Use image node_id 3 for calling the TestExclusive obj's underlying member method code with example usage: obj.test_binop() without return types