python解析摄像头二维码数据

import numpy as np
from PIL import Image
from pyzbar import pyzbar
import cv2

def OR_read(img):
# 读取文件，转成数组
im = np.array(img)
py_decode = pyzbar.decode(im)
if len(py_decode) != 0:
return py_decode[0].data.decode(“utf-8”)
else:
return None
# return pyzbar.decode(im)[0].data.decode(“utf-8”)

cap = cv2.VideoCapture(0, cv2.CAP_DSHOW)
while cap.isOpened():
ok, frame = cap.read() # 读取一帧数据
# if not ok:
# break
print(OR_read(frame))

cv2.imshow("frame", frame)
c = cv2.waitKey(10)
if c & 0xFF == ord('q'):
    break

cap.release()
cv2.destroyAllWindows()