3 files changed, 13 insertions, 2 deletions
diff --git a/src/isodate/isoduration.py b/src/isodate/isoduration.py
index 6da69f5..d64b3c0 100644
--- a/src/isodate/isoduration.py
+++ b/src/isodate/isoduration.py
@@ -33,6 +33,7 @@ format timedelta or Duration instances as ISO conforming strings.
 from datetime import timedelta
 from decimal import Decimal
 import re
+import sys
 
 from isodate.duration import Duration
 from isodate.isoerror import ISO8601Error
@@ -51,6 +52,9 @@ ISO8601_PERIOD_REGEX = re.compile(
     r"(?P<seconds>[0-9]+([,.][0-9]+)?S)?)?$")
 # regular expression to parse ISO duartion strings.
 
+if sys.version_info[0] >= 3:
+    basestring = str
+
 
 def parse_duration(datestring):
     """
diff --git a/src/isodate/isotime.py b/src/isodate/isotime.py
index 9650cda..a430982 100644
--- a/src/isodate/isotime.py
+++ b/src/isodate/isotime.py
@@ -32,6 +32,7 @@ It supports all basic and extended formats including time zone specifications
 as described in the ISO standard.
 '''
 import re
+import sys
 from decimal import Decimal
 from datetime import time
 
@@ -39,6 +40,9 @@ from isodate.isostrf import strftime, TIME_EXT_COMPLETE, TZ_EXT
 from isodate.isoerror import ISO8601Error
 from isodate.isotzinfo import TZ_REGEX, build_tzinfo
 
+if sys.version_info > (3,):
+    long = int
+
 TIME_REGEX_CACHE = []
 # used to cache regular expressions to parse ISO time strings.
 
diff --git a/src/isodate/tests/test_pickle.py b/src/isodate/tests/test_pickle.py
index 4b824e7..0d8c184 100644
--- a/src/isodate/tests/test_pickle.py
+++ b/src/isodate/tests/test_pickle.py
@@ -1,5 +1,8 @@
+try:
+    import cPickle as pickle
+except ImportError:
+    import pickle
 import unittest
-import cPickle as pickle
 import isodate
 
 
@@ -31,7 +34,7 @@ class TestPickle(unittest.TestCase):
                 pikl = pickle.dumps(dur, proto)
                 if dur != pickle.loads(pikl):
                     raise Exception("not equal")
-            except Exception, e:
+            except Exception as e:
                 failed.append("pickle proto %d failed (%s)" % (proto, repr(e)))
         self.assertEqual(len(failed), 0, "pickle protos failed: %s" %
                          str(failed))