Migrate to py3

__init__.py

@@ -1,7 +1,6 @@
 # This file is part of product_special_price module for Tryton.
 # The COPYRIGHT file at the top level of this repository contains the full
 # copyright notices and license terms.
-
 from trytond.pool import Pool
 from . import shop
 from . import product

product.py

@@ -19,8 +19,7 @@ STATES = {
 DEPENDS = ['active']
 
 
-class Template:
-    __metaclass__ = PoolMeta
+class Template(metaclass=PoolMeta):
     __name__ = 'product.template'
     special_price = fields.MultiValue(fields.Numeric(
             "Special Price", digits=price_digits,
@@ -41,7 +40,6 @@ class Template:
 class ProductSpecialPrice(ModelSQL, CompanyValueMixin):
     "Product Special Price"
     __name__ = 'product.special_price'
-
     template = fields.Many2One(
         'product.template', "Template", ondelete='CASCADE', select=True)
     special_price = fields.Numeric("Special Price", digits=price_digits)
@@ -66,8 +64,7 @@ class ProductSpecialPrice(ModelSQL, CompanyValueMixin):
             parent='template', fields=fields)
 
 
-class Product:
-    __metaclass__ = PoolMeta
+class Product(metaclass=PoolMeta):
     __name__ = 'product.product'
 
     @classmethod

setup.py

@@ -7,10 +7,7 @@ from setuptools import setup
 import re
 import os
 import io
-try:
-    from configparser import ConfigParser
-except ImportError:
-    from ConfigParser import ConfigParser
+from configparser import ConfigParser
 
 MODULE = 'product_special_price'
 PREFIX = 'trytonzz'

shop.py

@@ -8,10 +8,8 @@ from trytond.pyson import Eval
 __all__ = ['SaleShop']
 
 
-class SaleShop:
-    __metaclass__ = PoolMeta
+class SaleShop(metaclass=PoolMeta):
     __name__ = 'sale.shop'
-
     special_price = fields.Boolean('Apply Special Price')
     type_special_price = fields.Selection([
             ('price', 'Special Price'),