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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_namepaths_bids_derivatives(self, f, tag, save_directory, suffix=None):
 """ Creates output directory and output name Paramters --------- f : str input files, includes the file bids_suffix tag : str what should be added to f in the output file. save_directory : str additional directory that the output file should go in suffix : str add new suffix to data Returns ------- save_name : str previous filename with new tag save_dir : str directory where it will be saved base_dir : str subjective base directory (i.e. derivatives/teneto/func[/anythingelse/]) """

        file_name = f.split('/')[-1].split('.')[0]
        if tag != '':
            tag = '_' + tag
        if suffix:
            file_name, _ = drop_bids_suffix(file_name)
            save_name = file_name + tag
            save_name += '_' + suffix
        else:
            save_name = file_name + tag
        paths_post_pipeline = f.split(self.pipeline)
        if self.pipeline_subdir:
            paths_post_pipeline = paths_post_pipeline[1].split(self.pipeline_subdir)[
                0]
        else:
            paths_post_pipeline = paths_post_pipeline[1].split(file_name)[0]
        base_dir = self.BIDS_dir + '/derivatives/' + 'teneto_' + \
            teneto.__version__ + '/' + paths_post_pipeline + '/'
        save_dir = base_dir + '/' + save_directory + '/'
        if not os.path.exists(save_dir):
            # A case has happened where this has been done in parallel and an error was raised. So do try/except
            try:
                os.makedirs(save_dir)
            except:
                # Wait 2 seconds so that the error does not try and save something in the directory before it is created
                time.sleep(2)
        if not os.path.exists(self.BIDS_dir + '/derivatives/' + 'teneto_' + teneto.__version__ + '/dataset_description.json'):
            try:
                with open(self.BIDS_dir + '/derivatives/' + 'teneto_' + teneto.__version__ + '/dataset_description.json', 'w') as fs:
                    json.dump(self.tenetoinfo, fs)
            except:
                # Same as above, just in case parallel does duplicaiton
                time.sleep(2)
        return save_name, save_dir, base_dir