简单的记录下二维码生成和解析的Python代码

依赖下面三个包：

• PIL（图像处理包，安装：pip install PIL）
• qrcode(二维码生成包，安装：pip install qrcode)
• zbarlight(二维码解析包,安装:pip install zbarlight)

具体脚本：

# coding: utf-8
"""
filename: qrcode.py
Created by Tacey Wong at 16-9-22 下午10:34
"""import zbar
import qrcode
from PIL import Image
import os, sysdef gen_qrcode(string, path, logo=""):"""生成中间带logo的二维码需要安装qrcode, PIL库@参数 string: 二维码字符串@参数 path: 生成的二维码保存路径@参数 logo: logo文件路径@return: None"""qr = qrcode.QRCode(version=2,error_correction=qrcode.constants.ERROR_CORRECT_H,box_size=8,border=1)qr.add_data(string)qr.make(fit=True)img = qr.make_image()img = img.convert("RGBA")if logo and os.path.exists(logo):try:icon = Image.open(logo)img_w, img_h = img.sizeexcept Exception, e:print esys.exit(1)factor = 4size_w = int(img_w / factor)size_h = int(img_h / factor)icon_w, icon_h = icon.sizeif icon_w > size_w:icon_w = size_wif icon_h > size_h:icon_h = size_hicon = icon.resize((icon_w, icon_h), Image.ANTIALIAS)w = int((img_w - icon_w) / 2)h = int((img_h - icon_h) / 2)icon = icon.convert("RGBA")img.paste(icon, (w, h), icon)img.save(path)# 调用系统命令打开图片# xdg - open(opens a file or URL in the user's preferred application)os.system('xdg-open %s' % path)def decode_qrcode(path):"""解析二维码信息@参数 path: 二维码图片路径@return: 二维码信息"""# 创建图片扫描对象scanner = zbar.ImageScanner()# 设置对象属性scanner.parse_config('enable')# 打开含有二维码的图片img = Image.open(path).convert('L')# 获取图片的尺寸width, height = img.size# 建立zbar图片对象并扫描转换为字节信息qrCode = zbar.Image(width, height, 'Y800', img.tobytes())scanner.scan(qrCode)# 组装解码信息data = ''for s in qrCode:data += s.data# 删除图片对象del img# 输出解码结果return dataif __name__ == "__main__":info = "中华人民共和国合法公民——Tacey Wong\nhttp://www.cnblogs.com/taceywong"pic_path = "qr.png"icon_path = "logo.png"gen_qrcode(info, pic_path,logo_path )print decode_qrcode(pic_path)

生成的二维码图片如下：

扫描结果如下：

参考资料:https://pypi.python.org/pypi/qrcode