diff --git a/rida/builder.py b/rida/builder.py
index 7796cd26..0bb3cabb 100644
--- a/rida/builder.py
+++ b/rida/builder.py
@@ -28,6 +28,7 @@
 #       their tag names.
 # TODO: Ensure the RPM %dist tag is set according to the policy.
 
+import six
 from abc import ABCMeta, abstractmethod
 import logging
 import os
@@ -112,7 +113,7 @@ Koji workflow
 8) (optional) wait for selected builds to be available in buildroot
 
 """
-class GenericBuilder:
+class GenericBuilder(six.with_metaclass(ABCMeta)):
     """
     External Api for builders
 
@@ -138,7 +139,6 @@ class GenericBuilder:
                              "?#70fa7516b83768595a4f3280ae890a7ac957e0c7")
 
     """
-    __metaclass__ = ABCMeta
 
     backend = "generic"
 
@@ -589,7 +589,7 @@ chmod 644 %buildroot/%_rpmconfigdir/macros.d/macros.modules
         :param build_tag_name
         :param groups: A dict {'group' : [package, ...]}
         """
-        log.debug("Adding groups=%s to tag=%s" % (groups.keys(), dest_tag))
+        log.debug("Adding groups=%s to tag=%s" % (list(groups), dest_tag))
         if groups and not isinstance(groups, dict):
             raise ValueError("Expected dict {'group' : [str(package1), ...]")
 
@@ -599,7 +599,7 @@ chmod 644 %buildroot/%_rpmconfigdir/macros.d/macros.modules
             for p in self.koji_session.getTagGroups(dest_tag, inherit=False)
         ])
 
-        for group, packages in groups.iteritems():
+        for group, packages in groups.items():
             group_id = existing_groups.get(group, None)
             if group_id is not None:
                 log.debug("Group %s already exists for tag %s. Skipping creation." % (group, dest_tag))
@@ -646,7 +646,7 @@ chmod 644 %buildroot/%_rpmconfigdir/macros.d/macros.modules
                 raise SystemError("Tag %s: master lock already set. Can't edit tag" % taginfo['name'])
 
             perm_ids = dict([(p['name'], p['id']) for p in self.koji_session.getAllPerms()])
-            if perm not in perm_ids.keys():
+            if perm not in perm_ids:
                 raise ValueError("Unknown permissions %s" % perm)
 
             perm_id = perm_ids[perm]
diff --git a/rida/config.py b/rida/config.py
index 49bba237..2ec05b00 100644
--- a/rida/config.py
+++ b/rida/config.py
@@ -25,11 +25,6 @@
 
 """Configuration handler functions."""
 
-try:
-    import configparser # py3
-except ImportError:
-    import ConfigParser as configparser  # py2
-
 import six
 
 from rida import app
diff --git a/rida/pdc.py b/rida/pdc.py
index f97eadeb..39bb100e 100644
--- a/rida/pdc.py
+++ b/rida/pdc.py
@@ -27,6 +27,7 @@
 
 import modulemd
 from pdc_client import PDCClient
+import six
 
 
 
@@ -68,7 +69,7 @@ def get_variant_dict(data):
         return isinstance(data, modulemd.ModuleMetadata)
 
     def is_module_str(data):
-        return isinstance(data, str) or isinstance(data, unicode)
+        return isinstance(data, six.string_types)
 
     result = None
 
diff --git a/rida/scheduler/main.py b/rida/scheduler/main.py
index a3cbd468..171a9463 100644
--- a/rida/scheduler/main.py
+++ b/rida/scheduler/main.py
@@ -29,21 +29,13 @@ This is the main component of the orchestrator and is responsible for
 proper scheduling component builds in the supported build systems.
 """
 
-
 import inspect
 import operator
 import os
 import pprint
 import threading
 import time
-
-try:
-    # Py3
-    import queue
-except ImportError:
-    # Py2
-    import Queue as queue
-
+import six.moves.queue as queue
 
 import rida.config
 import rida.messaging
@@ -64,7 +56,9 @@ class STOP_WORK(object):
 def module_build_state_from_msg(msg):
     state = int(msg.module_build_state)
     # TODO better handling
-    assert state in models.BUILD_STATES.values(), "state=%s(%s) is not in %s" % (state, type(state), models.BUILD_STATES.values())
+    assert state in models.BUILD_STATES.values(), (
+        'state=%s(%s) is not in %s'
+        % (state, type(state), list(models.BUILD_STATES.values())))
     return state
 
 
@@ -116,7 +110,8 @@ class MessageWorker(threading.Thread):
             if koji.BUILD_STATES[state] not in self.on_build_change:
                 raise KeyError("Koji build states %r not handled." % state)
 
-        all_fns = self.on_build_change.items() + self.on_module_change.items()
+        all_fns = (list(self.on_build_change.items()) +
+                   list(self.on_module_change.items()))
         for key, callback in all_fns:
             expected = ['config', 'session', 'msg']
             argspec = inspect.getargspec(callback)[0]
diff --git a/rida/utils.py b/rida/utils.py
index caa02f65..3f1cfbfb 100644
--- a/rida/utils.py
+++ b/rida/utils.py
@@ -27,7 +27,7 @@ import re
 import functools
 import time
 from rida import log, models
-from errors import ValidationError
+from rida.errors import ValidationError
 
 
 def retry(timeout=120, interval=30, wait_on=Exception):
diff --git a/rida/views.py b/rida/views.py
index eb2cec82..14a71038 100644
--- a/rida/views.py
+++ b/rida/views.py
@@ -41,8 +41,8 @@ import tempfile
 from rida import app, conf, db, log
 from rida import models
 from rida.utils import pagination_metadata, filter_module_builds
-from errors import (ValidationError, Unauthorized, UnprocessableEntity,
-                    Conflict, NotFound)
+from rida.errors import (
+    ValidationError, Unauthorized, UnprocessableEntity, Conflict, NotFound)
 
 class SubmitBuild(View):
     """Handles new module build submissions."""
diff --git a/tests/test_views/test_views.py b/tests/test_views/test_views.py
index 34bc6e63..4e13ad8f 100644
--- a/tests/test_views/test_views.py
+++ b/tests/test_views/test_views.py
@@ -25,7 +25,6 @@ import json
 from mock import patch
 from shutil import copyfile
 from os import path, mkdir
-from datetime import datetime
 
 from tests import app, init_data