python获取指定目录下文件

import os


def readDir(dirPath):
    if dirPath[-1] == '/':
        print('文件夹路径末尾不能加/')
        return
    allFiles = []  # 储存
    if os.path.isdir(dirPath):
        fileList = os.listdir(dirPath)
        for f in fileList:
            f = dirPath+'/'+f
            if os.path.isdir(f):
                subFiles = readDir(f)
                allFiles = subFiles + allFiles  # 合并当前目录与子目录的所有文件路径
            else:
                allFiles.append(f)
        return allFiles
    else:
        return 'Error,not a dir'