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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def load_raw(raw_pickle_file):
 """ 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. """

    with open(raw_pickle_file, 'rb') as f:
        raw = pickle.load(f)
    logging.info("Loaded %i recordings.", len(raw['handwriting_datasets']))
    return raw