how to find out number of images in folder python code example

Example 1: python count files directory

import os
len(os.listdir(directory))

Example 2: get all type of image in folder python

import cv2
import glob

imdir = 'path/to/files/'
ext = ['png', 'jpg', 'gif']    # Add image formats here

files = []
[files.extend(glob.glob(imdir + '*.' + e)) for e in ext]

images = [cv2.imread(file) for file in files]