from pyzbar.pyzbar import decode
import cv2
import numpy as np
imgdata = base64.b64decode(qrcode)
nparr = np.fromstring(imgdata, np.uint8)
img = cv2.imdecode(nparr, cv2.IMREAD_COLOR)
result = decode(img)
if "token" in str(result):
token_url = result[0][0].decode("utf-8")
token = token_url.split('token=')[1]
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