towards supporting python 2 and 3

- use absolute_imports
- make use of six.moves
- use exec instead of execfile
- use list(dict) instead if dict.keys()

pandora/user/models.py

@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 # vi:si:et:sw=4:sts=4:ts=4
+from __future__ import division, print_function, absolute_import
+
 import copy
 from datetime import datetime
 
@@ -9,8 +11,6 @@ from django.db.models import Max
 from django.conf import settings
 from django.contrib.gis.geoip2 import GeoIP2
 
-
-
 import ox
 from oxdjango.fields import DictField
 from ox.utils import json
@@ -19,8 +19,9 @@ from itemlist.models import List, Position
 import text
 import edit
 
-import managers
-import tasks
+from . import managers
+from . import tasks
+
 
 class SessionData(models.Model):
     session_key = models.CharField(max_length=40, primary_key=True)
@@ -170,7 +171,7 @@ class SessionData(models.Model):
             j['notes'] = p.notes
             j['numberoflists'] = self.numberoflists
         if keys:
-            for key in j.keys():
+            for key in list(j):
                 if key not in keys:
                     del j[key]
         return j
@@ -323,7 +324,7 @@ def get_ui(user_ui, user=None):
         ids += add(user.lists.exclude(status="featured"), 'personal')
         ids += add(user.subscribed_lists.filter(status='public'), 'public')
     ids += add(List.objects.filter(status='featured'), 'featured')
-    for i in ui['lists'].keys():
+    for i in list(ui['lists']):
         if i not in ids:
             del ui['lists'][i]
     tids = ['']
@@ -373,7 +374,7 @@ def user_json(user, keys=None):
         'username': user.username,
     }
     if keys:
-        for key in j.keys():
+        for key in list(j):
             if key not in keys:
                 del j[key]
     return j

pandora/user/tasks.py

@@ -1,22 +1,24 @@
 # -*- coding: utf-8 -*-
 # vi:si:et:sw=4:sts=4:ts=4
+from __future__ import division, print_function, absolute_import
+
 import json
 from datetime import timedelta
-from itertools import izip_longest
 
+from six.moves import zip_longest
 from celery.task import task, periodic_task
 
-import models
 from app.models import Settings
-from statistics import Statistics
+from .statistics import Statistics
 
 @periodic_task(run_every=timedelta(hours=1), queue='encoding')
 def cronjob(**kwargs):
     update_statistics()
 
 def update_statistics():
+    from . import models
     def chunker(iterable, chunksize, filler):
-        return izip_longest(*[iter(iterable)]*chunksize, fillvalue=filler)
+        return zip_longest(*[iter(iterable)]*chunksize, fillvalue=filler)
 
     stats = Statistics()
     ids = [i['session_key']
@@ -30,12 +32,14 @@ def update_statistics():
 
 @task(ignore_results=True, queue='default')
 def parse_data(key):
+    from . import models
     session_data = models.SessionData.objects.get(session_key=key)
     session_data.parse_data()
     session_data.save()
 
 @task(ignore_results=True, queue='default')
 def update_numberoflists(username):
+    from . import models
     user = models.User.objects.get(username=username)
     models.SessionData.objects.filter(
         user=user

pandora/user/views.py

@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 # vi:si:et:sw=4:sts=4:ts=4
+from __future__ import division, print_function, absolute_import
+
 import random
 random.seed()
 import re
@@ -25,8 +27,8 @@ from item.models import Access, Item
 from item import utils 
 from changelog.models import add_changelog
 
-import models
-from decorators import capability_required_json
+from . import models
+from .decorators import capability_required_json
 
 
 def get_user_or_404(data):
@@ -770,10 +772,10 @@ def setUI(request, data):
     else:
         ui = json.loads(request.session.get('ui', '{}'))
     for key in data:
-        keys = map(lambda p: p.replace('\0', '\\.'), key.replace('\\.', '\0').split('.'))
+        keys = [p.replace('\0', '\\.') for p in key.replace('\\.', '\0').split('.')]
         value = data[key]
         p = ui
-        while len(keys)>1:
+        while len(keys) > 1:
             key = keys.pop(0)
             if isinstance(p, list):
                 p = p[getPositionById(p, key)]