求文件夹下图片的数量python脚本

"""
求文件夹下图片的数量
"""
import os

path = 'F:/train-human/'
filenames = os.listdir(path)
file_len = len(filenames)
total = 0
for i in range(file_len):
    nowPath = os.path.join(path, filenames[i], 'alpha')
    imageName = os.listdir(nowPath)
    print(i, " : ", len(imageName))
    total = total + len(imageName)
print("total:", total)
# 一共21430张图片