code: def pydemo_exec(test_name):
      with open(test_name, "r") as t:
          demo = t.read()
      program = ""
      for line in demo.split("\n"):
          if "h2o.init" not in line:
              program += line if "\n" in line else line + "\n"
      demo_c = compile(program, "<string>", "exec")
      exec(demo_c, dict(__name__="main"))
  
imports: import json
  import codecs
label_desc: Use image node_id 6 for calling a global function with example usage: pydemo_exec(test_name) without return types