linux--安装zbar，亲测有效

ubuntu16.04安装方式 

sudo apt-get install libzbar-dev

pip install zbar


# 亲测有效   centos7 安装方式  

yum install python-devel

yum install zbar-devel

pip install zbar

from pyzbar.pyzbar import decode
from PIL import Image
image = iss
img = Image.open(image)
barcodes = decode(img)
for barcode in barcodes:
    url = barcode.data.decode("utf-8")
    print(url)