python 按照有序文件名顺序读取

用 os.listdir(path) 会打乱原有的文件顺序 , 需要进行一下排序 。

文件组织为 : 

代码 : 

import tensorflow as tf
import numpy as np
import os
image_name = 'img_4.jpg'
trainImage_path = r'./garbage_classify/train_data'
image_files = os.listdir(trainImage_path)
image_files.sort(key=lambda x : int(x.split('.')[0].split('_')[1] )  )
numOFimages = 0 
for image_file in image_files :
    if image_file.endswith('.jpg') :
        numOFimages+= 1
    else:
        # print("文件名 : " , image_file)
        with open(trainImage_path+'/'+image_file ,'r') as fr :
            try:
                info =  fr.readlines()
                key = info[0].strip('').split(',')[0]
                value = info[0].strip('').split(',')[1]
                classify[key] = value
        
            except FileNotFoundError:
                print("文件未找到")