如何利用python检测图片是否包含二维码

pip install pyzbar -i http://pypi.douban.com/simple --trusted-host pypi.douban.com
pip install Pillow

import pyzbar.pyzbar as pyzbar
from PIL import Image,ImageEnhance
import os
img_dir = "..\\img"
def open_img():

  img_list = []
  for _,_,file_list in os.walk(img_dir):
    img_list = [os.path.join(img_dir,file) for file in file_list if file.endswith(".jpg") or file.endswith(".png") ]
  print("所有文件:{}".format(img_list))

  return img_list



def show():
  img_list = open_img()
  for _img in img_list:
    img = Image.open(_img)
    # img = ImageEnhance.Brightness(img).enhance(2.0)#增加亮度

    # img = ImageEnhance.Sharpness(img).enhance(17.0)#锐利化

    # img = ImageEnhance.Contrast(img).enhance(4.0)#增加对比度

    # img = img.convert('L')#灰度化
    texts = pyzbar.decode(img)
    if not texts:
      print("{}文件不存在二维码".format(_img))
    for text in texts:
      t = text.data.decode("utf-8")
      if t:
        print("{}文件存在二维码，内容为：{}".format(_img,t))



if __name__ == '__main__':
  show()