Error : save() got an unexpected keyword argument 'format'

Question

I'm using odoo 9 and i'm trying to install custom module named odoo_qr_code which allow to add qr code in products form and create qr image for products and products variants. But when i press save after adding my qr code in product forms it shows error. Any help please ?

File "D:\Projet_Odoo\odoo-9.0rc20180515\openerp\addons\odoo_qr_code\models\models.py", line 23, in _generate_qr_code
img.save(buffer, format="PNG")
TypeError: save() got an unexpected keyword argument 'format'

models.py

import base64
import cStringIO

import qrcode
from openerp import models, fields, api


class ProductTemplateQRCode(models.Model):
_inherit = 'product.template'

@api.multi
@api.depends('product_qr_code')
def _generate_qr_code(self):
    qr = qrcode.QRCode(version=1, error_correction=qrcode.constants.ERROR_CORRECT_L, box_size=20, border=4)
    if self.product_qr_code:
        name = self.product_qr_code + '_product.png'
        qr.add_data(self.product_qr_code)
        qr.make(fit=True)
        img = qr.make_image()
        buffer = cStringIO.StringIO()
        img.save(buffer, format="PNG")
        qrcode_img = base64.b64encode(buffer.getvalue())
        self.update({'qr_code': qrcode_img, 'qr_code_name': name})

product_qr_code = fields.Char('QR Code')
qr_code = fields.Binary('QR Code', compute="_generate_qr_code")
qr_code_name = fields.Char(default="qr_code.png")


class ProductProductQRCode(models.Model):
_inherit = 'product.product'

@api.multi
@api.depends('product_qr_code')
def _generate_qr_code(self):
    qr = qrcode.QRCode(version=1, error_correction=qrcode.constants.ERROR_CORRECT_L, box_size=20, border=4)
    if self.product_qr_code:
        name = self.product_qr_code + '_product.png'
        qr.add_data(self.product_qr_code)
        qr.make(fit=True)
        img = qr.make_image()
        buffer = cStringIO.StringIO()
        img.save(buffer, format="PNG")
        qrcode_img = base64.b64encode(buffer.getvalue())
        self.update({'qr_code': qrcode_img, 'qr_code_name': name})

Answer 1

The error states that the function save is not accepting argument format. So you need to remove it (from both functions).

You can refer this this link for how to create QR code in python.

Hope it will help you.