嗯，这是我能做到的一种方式。

import os
import csv

dataset_path = "Datasets/VOS/train/masks"

with open("data.csv", "w", newline="") as csvfile:

    writer = csv.writer(csvfile)

    for folder in os.listdir(dataset_path):

        folder_path = os.path.join(dataset_path, folder)

        files = os.listdir(folder_path)

        for i in range(0, len(files), 7):
            chunk = files[i:i+7]
            names = [os.path.join(dataset_path, folder, file) for file in chunk]
            writer.writerow(names)