code: def test_date_munge():
      saved_flag = h2o.is_expr_optimizations_enabled()
      try:
          h2o.enable_expr_optimizations(False)
          date_munge()
      finally:
          h2o.enable_expr_optimizations(saved_flag)
  
imports: import sys, os
  import h2o
  from tests import pyunit_utils
label_desc: Use image node_id 2 for calling a global function with example usage: test_date_munge() without return types