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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 save_state(self, fname: str):
 """ Saves the current state of iterator to a file, so that iteration can be continued. Note that the data is not saved, i.e. the iterator must be initialized with the same parameters as in the first call. :param fname: File name to save the information to. """

        with open(fname, "wb") as fp:
            pickle.dump(self.batch_indices, fp)
            pickle.dump(self.curr_batch_index, fp)
            np.save(fp, [a.asnumpy() for a in self.inverse_data_permutations])
            np.save(fp, [a.asnumpy() for a in self.data_permutations])