遍历指定文件夹中所有文件，按num批量分成多个子文件夹（附运行代码）

遍历指定文件夹中所有文件，按num批量分成多个子文件夹。

import os
import shutil

file_path = '.\\dataset\\train\\Non-underburning\\'
new_file_path = '.\\Burn\\jpg_video_directory\\Non-underburning\\'

num = 100
list_ = os.listdir(file_path)
if num > len(list_):
    print('num<:', len(list_))
    exit()
if int(len(list_) % num) == 0:
    num_file = int(len(list_) / num)
else:
    num_file = int(len(list_) / num) + 1
cnt = 0
for n in range(1, num_file + 1):
    new_file = os.path.join(new_file_path + str(n))
    if os.path.exists(new_file + str(cnt)):
        print('error', new_file)
        exit()
    print('new:', new_file)
    os.mkdir(new_file)
    list_n = list_[num * cnt:num * (cnt + 1)]
    for m in list_n:
        old_path = os.path.join(file_path, m)
        new_path = os.path.join(new_file, m)
        shutil.copy(old_path, new_path)
    cnt += 1