Migrate to py3

__init__.py

@@ -1,10 +1,10 @@
 # The COPYRIGHT file at the top level of this repository contains the full
 # copyright notices and license terms.
 from trytond.pool import Pool
-from .product import *
+from . import product
 
 def register():
     Pool.register(
-        Template,
-        Product,
+        product.Template,
+        product.Product,
         module='product_qty', type_='model')

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_qty'
 PREFIX = 'trytonzz'