python 生成条形码

# 依赖环境
yum install python-magic libjpeg-devel freetype-devel
pip install Pillow pyBarcode

#本例子生成的是png格式图片的base64内容
import barcode
import base64
from barcode.writer import ImageWriter
import StringIO

def createbarcodebase64(str=''):
    try:
        EAN = barcode.get_barcode_class('ean13')
        ean = EAN(str,writer=ImageWriter())
        fp = StringIO.StringIO()
        ean.write(fp)
        image = base64.b64encode(buffer(fp.getvalue()))
    except Exception,e:
        return ""
    return image

<img src="data:image/png;base64,$privData['IMG']" />