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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 copy_mx_model_to(model_path, model_epoch, output_folder):
 """ Copy mxnet models to new path. :param model_path: Model path without -symbol.json and -%04d.params :param model_epoch: Epoch of the pretrained model :param output_folder: Output folder :return: New folder where the files are moved to """

    target_path = os.path.join(output_folder, os.path.basename(model_path))
    logger.info("Copying image model from {} to {}".format(model_path,
                                                           target_path))
    suffix = ['-symbol.json', '-%04d.params' % (model_epoch,)]
    for s in suffix:
        copyfile(model_path + s, target_path + s)
    return target_path