code: def load_input(definition):
      
      if isinstance(definition, (str, io.TextIOWrapper)):
          try:
              definition = yaml.safe_load(definition)
          except Exception as exc:
              raise ParsingInputError("Unable to parse input: %s" % str(exc))
  
      return definition
docs: Load and parse input if needed.
  
      :param definition: definition to use as an input (file, serialized JSON/YAML or dict)
      :return: loaded input
      :raises json2sql.ParsingInputError: when parsing fails