code: def load_raw(raw_pickle_file):
      
      with open(raw_pickle_file, 'rb') as f:
          raw = pickle.load(f)
      logging.info("Loaded %i recordings.", len(raw['handwriting_datasets']))
      return raw
docs: Load a pickle file of raw recordings.
  
      Parameters
      ----------
      raw_pickle_file : str
          Path to a pickle file which contains raw recordings.
  
      Returns
      -------
      dict
          The loaded pickle file.