直接代码：
import glob
import random
size_list = (12, 24, 48)
for size in size_list:
lines = []
for i in range(45):
dir_path = 'data_prepare/cal_positive_' + str(i+1) + '_' + str(size) + '/*.jpg'
filenames = glob.glob(dir_path)
filelist = map(lambda x:x+' '+str(i)+'\n', filenames)
lines = lines+filelist
random.shuffle(lines)
savename = 'cal_' + str(size) + '_list.txt'
with open(savename,'w') as f:
f.writelines(lines)
