diff --git a/bindings/python/examples/get_attributes_from_assertion.py b/bindings/python/examples/get_attributes_from_assertion.py
index 44ceb9e5..8f37a337 100644
--- a/bindings/python/examples/get_attributes_from_assertion.py
+++ b/bindings/python/examples/get_attributes_from_assertion.py
@@ -1,8 +1,10 @@
 # Example SP Python code to get attributes from an assertion
 
+from six import print_
+
 for attribute in assertion.attributeStatement[0].attribute:
     if attribute.name == lasso.SAML2_ATTRIBUTE_NAME_EPR:
         continue
-    print 'attribute : ' + attribute.name
+    print_('attribute : ' + attribute.name)
     for value in attribute.attributeValue:
-        print '  value : ' + value.any[0].content
+        print_('  value : ' + value.any[0].content)
diff --git a/bindings/python/tests/binding_tests.py b/bindings/python/tests/binding_tests.py
index 6d8e0dfa..54c3635f 100755
--- a/bindings/python/tests/binding_tests.py
+++ b/bindings/python/tests/binding_tests.py
@@ -311,8 +311,8 @@ class BindingTestCase(unittest.TestCase):
                    </samlp:Extensions>'''
         node = lasso.Node.newFromXmlNode(content)
         assert 'next_url' in node.any[1]
-        assert 'huhu' in node.attributes.keys()[0]
-        assert node.attributes.values()[0] == 'xxx'
+        assert '{https://www.entrouvert.com/}huhu' in node.attributes.keys()
+        assert 'xxx' in node.attributes.values()
         node.any = ('<zob>coin</zob>',)
         node.attributes = {'michou': 'zozo'}
         assert '<zob>coin</zob>' in node.dump()
diff --git a/bindings/python/tests/idwsf2_tests.py b/bindings/python/tests/idwsf2_tests.py
index 6f80c53d..4e47a4a1 100755
--- a/bindings/python/tests/idwsf2_tests.py
+++ b/bindings/python/tests/idwsf2_tests.py
@@ -27,7 +27,7 @@
 import os
 import unittest
 import sys
-from StringIO import StringIO
+from six import StringIO
 import logging
 
 logging.basicConfig()
@@ -310,11 +310,11 @@ class MetadataTestCase(IdWsf2TestCase):
         self.failUnless(idp_disco.request.svcMD[0].svcMDID is None)
         try:
             idp_disco.checkSecurityMechanism()
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
         try:
             idp_disco.validateRequest()
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
         self.failUnless(idp_disco.response is not None)
         self.failUnlessEqual(len(idp_disco.metadatas), 1)
@@ -391,16 +391,16 @@ class MetadataTestCase(IdWsf2TestCase):
         self.failUnless(idp_disco is not None)
         try:
             idp_disco.processRequestMsg(wsp_disco.msgBody)
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
         self.failUnless(idp_disco.request is not None)
         try:
             idp_disco.checkSecurityMechanism()
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
         try:
             idp_disco.failRequest(lasso.IDWSF2_DISCOVERY_STATUS_CODE_FAILED, lasso.IDWSF2_DISCOVERY_STATUS_CODE_FORBIDDEN)
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
         self.failUnless(idp_disco.response is not None)
         self.failUnless(idp_disco.response.status is not None)
@@ -415,7 +415,7 @@ class MetadataTestCase(IdWsf2TestCase):
             wsp_disco.processResponseMsg(idp_disco.msgBody)
         except lasso.Idwsf2DiscoveryForbiddenError:
             pass
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
 
     def test03(self):
@@ -475,7 +475,7 @@ class MetadataTestCase(IdWsf2TestCase):
         self.failUnless(soap_envelope.getMessageId() is not None)
         try:
             idp_disco.checkSecurityMechanism()
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
         # redirect
         interactionUrl = spInteractionUrl
@@ -488,7 +488,7 @@ class MetadataTestCase(IdWsf2TestCase):
         self.failUnless(response.detail.any[0].redirectURL.startswith(interactionUrl + '?transactionID='))
         try:
             idp_disco.buildResponseMsg()
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
         self.failUnless(idp_disco.msgBody is not None)
 
@@ -500,7 +500,7 @@ class MetadataTestCase(IdWsf2TestCase):
             wsp_disco.processResponseMsg(idp_disco.msgBody)
         except lasso.WsfprofileRedirectRequestError:
             pass
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
         response_envelope = wsp_disco.getSoapEnvelopeResponse()
         self.failUnless(response_envelope.sb2GetRedirectRequestUrl().startswith(interactionUrl + '?transactionID='))
@@ -527,11 +527,11 @@ class MetadataTestCase(IdWsf2TestCase):
         self.failUnless(idp_disco.request.svcMD[0].svcMDID is None)
         try:
             idp_disco.checkSecurityMechanism()
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
         try:
             idp_disco.validateRequest()
-        except lasso.Error, e:
+        except lasso.Error as e:
             self.fail(e)
         self.failUnless(idp_disco.response is not None)
         self.failUnlessEqual(len(idp_disco.metadatas), 1)
diff --git a/lasso/build_strerror.py b/lasso/build_strerror.py
index fca59628..908638d5 100644
--- a/lasso/build_strerror.py
+++ b/lasso/build_strerror.py
@@ -1,42 +1,42 @@
 #! /usr/bin/env python
 
-from cStringIO import StringIO
 import glob
 import re
 import sys
 import os
+from six import print_, StringIO
 
 srcdir = sys.argv[1]
 
-hlines = file('%s/errors.h' % srcdir,'r').readlines()
 messages = dict()
 description = ''
 
-for line in hlines:
-    m = re.match(r'^ \* LASSO.*ERROR', line)
-    if m:
-        description = ''
-        continue
-    m = re.match(r'^ \* (.*[^:])$', line)
-    if m:
-        description += m.group(1)
-    m = re.match(r'#define (LASSO_\w*ERROR\w+)', line)
-    if m and description:
-        description = re.sub(r'[ \n]+', ' ', description).strip()
-        messages[m.group(1)] = description
-        description = ''
-    else:
-        m = re.match(r'#define (LASSO_\w*ERROR\w+)',line)
+with open('%s/errors.h' % srcdir,'r') as f:
+    for line in f:
+        m = re.match(r'^ \* LASSO.*ERROR', line)
         if m:
-            messages[m.group(1)] = m.group(1)
+            description = ''
+            continue
+        m = re.match(r'^ \* (.*[^:])$', line)
+        if m:
+            description += m.group(1)
+        m = re.match(r'#define (LASSO_\w*ERROR\w+)', line)
+        if m and description:
+            description = re.sub(r'[ \n]+', ' ', description).strip()
+            messages[m.group(1)] = description
+            description = ''
+        else:
+            m = re.match(r'#define (LASSO_\w*ERROR\w+)',line)
+            if m:
+                messages[m.group(1)] = m.group(1)
 
-clines = file('%s/errors.c.in' % srcdir,'r').readlines()
-for line in clines:
-    if '@ERROR_CASES@' in line:
-        keys = messages.keys()
-        keys.sort()
-        for k in keys:
-            print """		case %s:
-			return "%s";""" % (k,messages[k].rstrip('\n'))
-    else:
-        print line,
+with open('%s/errors.c.in' % srcdir,'r') as f:
+    for line in f:
+        if '@ERROR_CASES@' in line:
+            keys = sorted(messages.keys())
+            for k in keys:
+                print_('		case %s:\n'
+                       '			return "%s";' %
+                       (k,messages[k].rstrip('\n')))
+        else:
+            print_(line, end="")