diff --git a/deepdiff/deepdiff.py b/deepdiff/deepdiff.py
index a3353220..38ccfe74 100644
--- a/deepdiff/deepdiff.py
+++ b/deepdiff/deepdiff.py
@@ -4,7 +4,10 @@
 
 import difflib
 import datetime
+from builtins import int
 from collections import Iterable
+from past.builtins import basestring
+from six import iteritems
 
 class DeepDiff(object):
     r"""
@@ -142,7 +145,7 @@ def __init__(self, t1, t2):
         
         self.diffit(t1, t2)
 
-        self.changes = dict((k, v) for k, v in self.changes.iteritems() if v)
+        self.changes = dict((k, v) for k, v in iteritems(self.changes) if v)
 
 
     # @property
@@ -188,7 +191,7 @@ def diffit(self, t1, t2, parent="root"):
                 diff = '\n'.join(diff)
                 self.changes["values_changed"].append("%s:\n%s" % (parent, diff))
 
-        elif isinstance(t1, (int, long, float, complex, datetime.datetime)):
+        elif isinstance(t1, (int, float, complex, datetime.datetime)):
             if t1 != t2:
                 self.changes["values_changed"].append("%s: %s ====>> %s" % (parent, t1, t2))
             
diff --git a/setup.py b/setup.py
index 8042d996..3df67b13 100644
--- a/setup.py
+++ b/setup.py
@@ -15,6 +15,7 @@
       author_email='sep@zepworks.com',
       license='MIT',
       packages=['deepdiff'],
+      install_requires=['future', 'six'],
       zip_safe=False,
       long_description=long_description,
       classifiers=[