Index: transaction/_transaction.py
===================================================================
--- transaction/_transaction.py	(revision 103877)
+++ transaction/_transaction.py	(working copy)
@@ -105,7 +105,7 @@
 import traceback
 from cStringIO import StringIO
 
-from zope import interface
+from zope.interface import implements
 
 from transaction.weakset import WeakSet
 from transaction.interfaces import TransactionFailedError
@@ -133,8 +133,8 @@
 
 class Transaction(object):
 
-    interface.implements(interfaces.ITransaction,
-                         interfaces.ITransactionDeprecated)
+    implements(interfaces.ITransaction,
+               interfaces.ITransactionDeprecated)
 
 
     # Assign an index to each savepoint so we can invalidate later savepoints
@@ -408,7 +408,10 @@
         # Execute the two-phase commit protocol.
 
         L = list(self._resources)
-        L.sort(rm_cmp)
+        if sys.version_info < (3,):
+            L.sort(rm_cmp)
+        else:
+            L.sort(key=lambda o:o.sortKey())
         try:
             for rm in L:
                 rm.tpc_begin(self)
@@ -628,7 +631,7 @@
     Transaction savepoints coordinate savepoints for data managers
     participating in a transaction.
     """
-    interface.implements(interfaces.ISavepoint)
+    implements(interfaces.ISavepoint)
 
     valid = property(lambda self: self.transaction is not None)
 
Index: ez_setup.py
===================================================================
--- ez_setup.py	(revision 103877)
+++ ez_setup.py	(working copy)
@@ -94,7 +94,7 @@
     try:
         pkg_resources.require("setuptools>="+version)
 
-    except pkg_resources.VersionConflict, e:
+    except pkg_resources.VersionConflict:
         # XXX could we install in a subprocess here?
         print >>sys.stderr, (
             "The required version of setuptools (>=%s) is not available, and\n"
@@ -186,8 +186,8 @@
             from setuptools.command.easy_install import main
             main(argv)
         else:
-            print "Setuptools version",version,"or greater has been installed."
-            print '(Run "ez_setup.py -U setuptools" to reinstall or upgrade.)'
+            print("Setuptools version",version,"or greater has been installed.")
+            print('(Run "ez_setup.py -U setuptools" to reinstall or upgrade.)')
 
 
 
Index: setup.py
===================================================================
--- setup.py	(revision 103877)
+++ setup.py	(working copy)
@@ -21,11 +21,20 @@
 
 from setuptools import setup, find_packages
 
+import setuptools
+setuptools.run_2to3=True
+
 here = os.path.abspath(os.path.dirname(__file__))
 README = (open(os.path.join(here, 'README.txt')).read()
           + '\n\n' +
           open(os.path.join(here, 'CHANGES.txt')).read())
 
+try:
+    from setuptools import lib2to3_fixer_packages
+    lib2to3_fixer_packages.append('zope.fixers')
+except ImportError:
+    pass
+
 setup(name='transaction',
       version=__version__,
       description='Transaction management for Python',
@@ -56,6 +65,6 @@
         'zope.interface',
         ],
       entry_points = """\
-      """
+      """,
       )