getAllFiles

import os

def getAllFiles(folder, files=[]):
    # get files and folders in current folder
    allContent = [folder + "/" + i for i in os.listdir(folder)]

    # list all files in current folder
    files += [i for i in allContent if i.lower().endswith(".jpg")]

    # get subfolders
    subfolders = [i for i in allContent if os.path.isdir(i)]

    # recursive call for subfolders
    for f in subfolders:
        getAllFiles(f + "/")

    return files

for i in getAllFiles("e:/photos"):
    print i