1 # -*- coding: utf-8 -*- 2 from pathlib import Path  #从pathlib中导入Path 3 import os 4 import fileinput 5 import random 6 root_path='/home/tay/Videos/trash/垃圾分类项目/total/' 7 train =  open('./trash_train.txt','a') 8 test = open('./trash_test.txt','a') 9 pwd = os.getcwd() +'/'# the val data path 训练集的路径10 11 12 def gen_txt():13     i =014     for file in os.listdir(root_path):15         print('file is{}'.format(str(file)))16         for init in os.listdir(os.path.join(root_path, file)): #子文件夹17             print('init is{}'.format(str(init)))18             i += 119             pathDir = os.listdir(os.path.join(root_path, file, init)) #20             print('pathDir is', pathDir)21             file_num = len(pathDir)22             rate = 0.223             pick_num = int(file_num * rate)24             sample = random.sample(pathDir, pick_num)  #随机选取20%的pathDir字符串25             print('sample is', sample)26             for pick_name in sample:27                 test.write(root_path.split('total/')[-1] +file + '/' + init +'/' + pick_name + ' ' + str(i) + '\n')28             # for name in pathDir: #文件夹中的图片名29                 # print('name is{}'.format(str(name)))30                 # if test31                 # total.write(root_path.split('total/')[-1] +file + '/' + init +'/' + name + ' ' + str(i) + '\n' )32             same = [x for x in pathDir if x in sample] #列表中相同的内容33             diff = [y for y in (sample + pathDir) if y not in same] #列表中不同的内容34             print('different', diff)35             print('same', same)36             for train_name in diff:37                 train.write(root_path.split('total/')[-1] +file + '/' + init +'/' + train_name + ' ' + str(i) + '\n')38 gen_txt()

采用了random.sample函数来随机选取特定数量的文件名作为测试集，通过比较两个列表中不同的元素来获取训练集的文件名。

总体上就是在进行字符串操作。