Fix pep8 and pyflakes

__tryton__.py

@@ -21,7 +21,7 @@
     - сметка за разходи / приходу
     - данъци за клиент / доставчик
 ''',
-    'description_ca_ES': '''Afegeix propietats de comptabilitat a productes i 
+    'description_ca_ES': '''Afegeix propietats de comptabilitat a productes i
 categories com:
     - Comptes de despeses i ingressos
     - Impostos per client i proveïdor

product.py

@@ -23,7 +23,7 @@ class Category(ModelSQL, ModelView):
                     | Eval('account_parent')),
                 },
             depends=['account_parent']))
-    account_revenue = fields.Property(fields.Many2One( 'account.account',
+    account_revenue = fields.Property(fields.Many2One('account.account',
             'Account Revenue', domain=[
                 ('kind', '=', 'revenue'),
                 ('company', '=', Eval('context', {}).get('company', 0)),

tests/test_account_product.py

@@ -2,7 +2,8 @@
 #This file is part of Tryton.  The COPYRIGHT file at the top level of
 #this repository contains the full copyright notices and license terms.
 
-import sys, os
+import sys
+import os
 DIR = os.path.abspath(os.path.normpath(os.path.join(__file__,
     '..', '..', '..', '..', '..', 'trytond')))
 if os.path.isdir(DIR):
@@ -33,6 +34,7 @@ class AccountProductTestCase(unittest.TestCase):
         '''
         test_depends()
 
+
 def suite():
     suite = trytond.tests.test_tryton.suite()
     suite.addTests(unittest.TestLoader().loadTestsFromTestCase(