code: def test_for_else1(self):
      self.assertCorrect(
          source="for i in j: k = 1\nb = k",
          lhs_conditional=["i", "k"],
          lhs_stable=["b"],
          rhs_conditional=[],
          rhs_stable=["j", "k"],
          undefined=["j", "k"],
      )
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  from ...asttools.visitors.cond_symbol_visitor import conditional_symbols
  import ast
  from ...testing import py2only
label_desc: Use image node_id 20 for calling the Test obj's underlying member method code with example usage: obj.test_for_else1() without return types