Some python3 compatibility fixes (close #220).

modeltranslation/admin.py

@@ -215,7 +215,7 @@ class TranslationBaseModelAdmin(BaseModelAdmin):
         if exclude_languages:
             excl_languages = exclude_languages
         exclude = []
-        for orig_fieldname, translation_fields in self.trans_opts.fields.iteritems():
+        for orig_fieldname, translation_fields in self.trans_opts.fields.items():
             for tfield in translation_fields:
                 language = tfield.name.split('_')[-1]
                 if language in excl_languages and tfield not in exclude:

modeltranslation/management/commands/sync_translation_fields.py

@@ -69,7 +69,7 @@ class Command(NoArgsCommand):
             db_table = model._meta.db_table
             model_full_name = '%s.%s' % (model._meta.app_label, model._meta.module_name)
             opts = translator.get_options_for_model(model)
-            for field_name in opts.local_fields.iterkeys():
+            for field_name in opts.local_fields.keys():
                 missing_langs = list(self.get_missing_languages(field_name, db_table))
                 if missing_langs:
                     found_missing_fields = True

modeltranslation/tests/models.py

@@ -1,8 +1,4 @@
 # -*- coding: utf-8 -*-
-import sys
-if sys.version > '3':
-    long = int
-
 from django.core import validators
 from django.db import models
 from django.utils import six
@@ -113,7 +109,7 @@ class FancyDescriptor(object):
         return 'a' * length
 
     def __set__(self, obj, value):
-        if isinstance(value, (int, long)):
+        if isinstance(value, six.integer_types):
             obj.__dict__[self.field.name] = value
         elif isinstance(value, six.string_types):
             obj.__dict__[self.field.name] = len(value)