code: def pybooklet_exec(test_name):
      pyunit = "import h2o\nfrom tests import pybooklet_utils\n"
      with open(test_name, "r") as t:
          pyunit = pyunit + t.read()
      pyunit_c = compile(pyunit, "<string>", "exec")
      exec(pyunit_c, dict(__name__="main"))
  
imports: import sys, os
  import h2o
label_desc: Use image node_id 5 for calling a global function with example usage: pybooklet_exec(test_name) without return types