code: def from_json(cls, json_string):
          
          input_dict = json.loads(json_string)
          # convert index to tuple if required
          if input_dict['index'] and isinstance(input_dict['index'][0], list):
              input_dict['index'] = [tuple(x) for x in input_dict['index']]
          # convert index_name to tuple if required
          if isinstance(input_dict['meta_data']['index_name'], list):
              input_dict['meta_data']['index_name'] = tuple(input_dict['meta_data']['index_name'])
          data = input_dict['data'] if input_dict['data'] else None
          return cls(data=data, index=input_dict['index'], **input_dict['meta_data'])
docs: Creates and return a DataFrame from a JSON of the type created by to_json
  
          :param json_string: JSON
          :return: DataFrame