Add Python3 support

issue3211

.drone.yml

@@ -1,9 +1,9 @@
-image: python2.7
+image: python:all
 env:
   - POSTGRESQL_URI=postgresql://postgres@127.0.0.1:5432/
   - MYSQL_URI=mysql://root@127.0.0.1:3306/
 script:
   - pip install tox
-  - tox -e "py27-{sqlite,postgresql}"
+  - tox -e "{py27,py33,py34,py35}-{sqlite,postgresql}" --skip-missing-interpreters
 services:
   - postgres

CHANGELOG

@@ -1,3 +1,5 @@
+* Add Python3 support
+
 Version 3.8.0 - 2015-11-02
 * Bug fixes (see mercurial logs for details)
 

carrier.py

@@ -7,10 +7,10 @@ from trytond.pool import Pool, PoolMeta
 from trytond.pyson import Eval
 
 __all__ = ['Carrier']
-__metaclass__ = PoolMeta
 
 
 class Carrier:
+    __metaclass__ = PoolMeta
     __name__ = 'carrier'
     percentage = fields.Numeric('Percentage', digits=(16, 8),
         states={

sale.py

@@ -5,10 +5,10 @@ from decimal import Decimal
 from trytond.pool import PoolMeta
 
 __all__ = ['Sale']
-__metaclass__ = PoolMeta
 
 
 class Sale:
+    __metaclass__ = PoolMeta
     __name__ = 'sale.sale'
 
     def _get_carrier_context(self):

setup.py

@@ -5,11 +5,17 @@
 from setuptools import setup
 import re
 import os
-import ConfigParser
+import io
+try:
+    from configparser import ConfigParser
+except ImportError:
+    from ConfigParser import ConfigParser
 
 
 def read(fname):
-    return open(os.path.join(os.path.dirname(__file__), fname)).read()
+    return io.open(
+        os.path.join(os.path.dirname(__file__), fname),
+        'r', encoding='utf-8').read()
 
 
 def get_require_version(name):
@@ -21,7 +27,7 @@ def get_require_version(name):
         major_version, minor_version + 1)
     return require
 
-config = ConfigParser.ConfigParser()
+config = ConfigParser()
 config.readfp(open('tryton.cfg'))
 info = dict(config.items('tryton'))
 for key in ('depends', 'extras_depend', 'xml'):
@@ -96,6 +102,9 @@ setup(name=name,
         'Natural Language :: Spanish',
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3.3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Office/Business',
@@ -111,4 +120,8 @@ setup(name=name,
     test_suite='tests',
     test_loader='trytond.test_loader:Loader',
     tests_require=tests_require,
+    use_2to3=True,
+    convert_2to3_doctests=[
+        'tests/scenario_carrier_percentage_with_purchase_shipment_cost.rst',
+        ],
     )

stock.py

@@ -6,7 +6,6 @@ from trytond.pool import Pool, PoolMeta
 from trytond.transaction import Transaction
 
 __all__ = ['ShipmentIn', 'ShipmentOut']
-__metaclass__ = PoolMeta
 
 
 def _percentage_amount(lines, company):
@@ -30,6 +29,7 @@ def _percentage_amount(lines, company):
 
 
 class ShipmentIn:
+    __metaclass__ = PoolMeta
     __name__ = 'stock.shipment.in'
 
     def _get_carrier_context(self):
@@ -47,6 +47,7 @@ class ShipmentIn:
 
 
 class ShipmentOut:
+    __metaclass__ = PoolMeta
     __name__ = 'stock.shipment.out'
 
     def _get_carrier_context(self):

tests/__init__.py

@@ -1,6 +1,6 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 
-from test_carrier_percentage import suite
+from .test_carrier_percentage import suite
 
 __all__ = ['suite']

tests/scenario_carrier_percentage_with_purchase_shipment_cost.rst

@@ -12,7 +12,7 @@ Imports::
     ...     get_company
     >>> from trytond.modules.account.tests.tools import create_fiscalyear, \
     ...     create_chart, get_accounts
-    >>> from.trytond.modules.account_invoice.tests.tools import \
+    >>> from trytond.modules.account_invoice.tests.tools import \
     ...     set_fiscalyear_invoice_sequences, create_payment_term
     >>> today = datetime.date.today()
 

tests/test_carrier_percentage.py

@@ -6,6 +6,7 @@ from decimal import Decimal
 import trytond.tests.test_tryton
 from trytond.tests.test_tryton import ModuleTestCase, with_transaction
 from trytond.tests.test_tryton import doctest_setup, doctest_teardown
+from trytond.tests.test_tryton import doctest_checker
 from trytond.pool import Pool
 
 from trytond.modules.currency.tests import create_currency
@@ -70,5 +71,6 @@ def suite():
     suite.addTests(doctest.DocFileSuite(
             'scenario_carrier_percentage_with_purchase_shipment_cost.rst',
             setUp=doctest_setup, tearDown=doctest_teardown, encoding='utf-8',
+            checker=doctest_checker,
             optionflags=doctest.REPORT_ONLY_FIRST_FAILURE))
     return suite

tox.ini

@@ -1,10 +1,10 @@
 [tox]
-envlist = py27-{sqlite,postgresql,mysql},pypy-{sqlite,postgresql}
+envlist = {py27,py33,py34,py35}-{sqlite,postgresql,mysql},pypy-{sqlite,postgresql}
 
 [testenv]
 commands = {envpython} setup.py test
 deps =
-    py27-postgresql: psycopg2 >= 2.0
+    {py27,py33,py34,py35}-postgresql: psycopg2 >= 2.0
     pypy-postgresql: psycopg2cffi >= 2.5
     mysql: MySQL-python
 setenv =