code: def load(fp, model=None, parser=None):
      
      if not model:
          model = 'simple'
      if not parser:
          parser = 'quick'
  
      if model not in ['simple']:
          raise ValueError
      if parser not in ['quick']:
          raise ValueError
  
      if model == 'simple' and parser == 'quick':
          return ARPAParserQuick(ARPAModelSimple).parse(fp)
      else:
          raise ValueError
docs: Deserialize fp (a file-like object) to a Python object.