diff --git a/bin/swift-account-audit b/bin/swift-account-audit
index 179bdade2d..026aa2f891 100755
--- a/bin/swift-account-audit
+++ b/bin/swift-account-audit
@@ -347,7 +347,7 @@ class Auditor(object):
 if __name__ == '__main__':
     try:
         optlist, args = getopt.getopt(sys.argv[1:], 'c:r:e:d')
-    except getopt.GetoptError, err:
+    except getopt.GetoptError as err:
         print str(err)
         print usage
         sys.exit(2)
diff --git a/bin/swift-dispersion-report b/bin/swift-dispersion-report
index 601e76dda9..d5b42eff55 100755
--- a/bin/swift-dispersion-report
+++ b/bin/swift-dispersion-report
@@ -96,11 +96,11 @@ def container_dispersion_report(coropool, connpool, account, container_ring,
                     container, error_log=error_log, retries=retries)
                 retries_done[0] += attempts - 1
                 found_count += 1
-            except ClientException, err:
+            except ClientException as err:
                 if err.http_status not in (404, 507):
                     error_log('Giving up on /%s/%s/%s: %s' % (part, account,
                               container, err))
-            except (Exception, Timeout), err:
+            except (Exception, Timeout) as err:
                 error_log('Giving up on /%s/%s/%s: %s' % (part, account,
                           container, err))
         if output_missing_partitions and \
@@ -170,7 +170,7 @@ def object_dispersion_report(coropool, connpool, account, object_ring,
         try:
             objects = [o['name'] for o in conn.get_container(
                 container, prefix='dispersion_', full_listing=True)[1]]
-        except ClientException, err:
+        except ClientException as err:
             if err.http_status != 404:
                 raise
             print >>stderr, 'No objects to query. Has ' \
@@ -201,11 +201,11 @@ def object_dispersion_report(coropool, connpool, account, object_ring,
                     container, obj, error_log=error_log, retries=retries)
                 retries_done[0] += attempts - 1
                 found_count += 1
-            except ClientException, err:
+            except ClientException as err:
                 if err.http_status not in (404, 507):
                     error_log('Giving up on /%s/%s/%s/%s: %s' % (part, account,
                               container, obj, err))
-            except (Exception, Timeout), err:
+            except (Exception, Timeout) as err:
                 error_log('Giving up on /%s/%s/%s/%s: %s' % (part, account,
                           container, obj, err))
         if output_missing_partitions and \
diff --git a/bin/swift-ring-builder b/bin/swift-ring-builder
index 1b6678fa6a..559ae23e69 100755
--- a/bin/swift-ring-builder
+++ b/bin/swift-ring-builder
@@ -251,7 +251,7 @@ swift-ring-builder <builder_file> create <part_power> <replicas>
         backup_dir = pathjoin(dirname(argv[1]), 'backups')
         try:
             mkdir(backup_dir)
-        except OSError, err:
+        except OSError as err:
             if err.errno != EEXIST:
                 raise
         builder.save(pathjoin(backup_dir, '%d.' % time() + basename(argv[1])))
@@ -612,7 +612,7 @@ swift-ring-builder <builder_file> remove <search-value> [search-value ...]
             for dev in devs:
                 try:
                     builder.remove_dev(dev['id'])
-                except exceptions.RingBuilderError, e:
+                except exceptions.RingBuilderError as e:
                     print '-' * 79
                     print(
                         "An error occurred while removing device with id %d\n"
@@ -647,7 +647,7 @@ swift-ring-builder <builder_file> rebalance <seed>
         try:
             last_balance = builder.get_balance()
             parts, balance = builder.rebalance(seed=get_seed(3))
-        except exceptions.RingBuilderError, e:
+        except exceptions.RingBuilderError as e:
             print '-' * 79
             print ("An error has occurred during ring validation. Common\n"
                    "causes of failure are rings that are empty or do not\n"
@@ -672,7 +672,7 @@ swift-ring-builder <builder_file> rebalance <seed>
             exit(EXIT_WARNING)
         try:
             builder.validate()
-        except exceptions.RingValidationError, e:
+        except exceptions.RingValidationError as e:
             print '-' * 79
             print ("An error has occurred during ring validation. Common\n"
                    "causes of failure are rings that are empty or do not\n"
@@ -813,7 +813,7 @@ if __name__ == '__main__':
     backup_dir = pathjoin(dirname(argv[1]), 'backups')
     try:
         mkdir(backup_dir)
-    except OSError, err:
+    except OSError as err:
         if err.errno != EEXIST:
             raise
 
diff --git a/swift/account/reaper.py b/swift/account/reaper.py
index 0259f31c9a..ef42afa1d1 100644
--- a/swift/account/reaper.py
+++ b/swift/account/reaper.py
@@ -331,7 +331,7 @@ class AccountReaper(Daemon):
                 self.stats_return_codes[2] = \
                     self.stats_return_codes.get(2, 0) + 1
                 self.logger.increment('return_codes.2')
-            except ClientException, err:
+            except ClientException as err:
                 if self.logger.getEffectiveLevel() <= DEBUG:
                     self.logger.exception(
                         _('Exception with %(ip)s:%(port)s/%(device)s'), node)
@@ -374,7 +374,7 @@ class AccountReaper(Daemon):
                 self.stats_return_codes[2] = \
                     self.stats_return_codes.get(2, 0) + 1
                 self.logger.increment('return_codes.2')
-            except ClientException, err:
+            except ClientException as err:
                 if self.logger.getEffectiveLevel() <= DEBUG:
                     self.logger.exception(
                         _('Exception with %(ip)s:%(port)s/%(device)s'), node)
@@ -433,7 +433,7 @@ class AccountReaper(Daemon):
                 self.stats_return_codes[2] = \
                     self.stats_return_codes.get(2, 0) + 1
                 self.logger.increment('return_codes.2')
-            except ClientException, err:
+            except ClientException as err:
                 if self.logger.getEffectiveLevel() <= DEBUG:
                     self.logger.exception(
                         _('Exception with %(ip)s:%(port)s/%(device)s'), node)
diff --git a/swift/account/server.py b/swift/account/server.py
index 530270311f..4e7f54dc9e 100644
--- a/swift/account/server.py
+++ b/swift/account/server.py
@@ -234,7 +234,7 @@ class AccountController(object):
             return HTTPInsufficientStorage(drive=drive, request=req)
         try:
             args = json.load(req.environ['wsgi.input'])
-        except ValueError, err:
+        except ValueError as err:
             return HTTPBadRequest(body=str(err), content_type='text/plain')
         ret = self.replicator_rpc.dispatch(post_args, args)
         ret.request = req
diff --git a/swift/common/bench.py b/swift/common/bench.py
index be4e9a96d1..97d80488d9 100644
--- a/swift/common/bench.py
+++ b/swift/common/bench.py
@@ -52,7 +52,7 @@ def delete_containers(logger, conf):
     def _deleter(url, token, container):
         try:
             client.delete_container(url, token, container)
-        except client.ClientException, e:
+        except client.ClientException as e:
             if e.http_status != HTTP_CONFLICT:
                 logger.warn("Unable to delete container '%s'. "
                             "Got http status '%d'."
@@ -413,7 +413,7 @@ class BenchDELETE(Bench):
                     direct_client.direct_delete_object(node, partition,
                                                        self.account,
                                                        container_name, name)
-            except client.ClientException, e:
+            except client.ClientException as e:
                 self.logger.debug(str(e))
                 self.failures += 1
         self.complete += 1
@@ -442,7 +442,7 @@ class BenchGET(Bench):
                     direct_client.direct_get_object(node, partition,
                                                     self.account,
                                                     container_name, name)
-            except client.ClientException, e:
+            except client.ClientException as e:
                 self.logger.debug(str(e))
                 self.failures += 1
         self.complete += 1
@@ -486,7 +486,7 @@ class BenchPUT(Bench):
                                                     container_name, name,
                                                     source,
                                                     content_length=len(source))
-            except client.ClientException, e:
+            except client.ClientException as e:
                 self.logger.debug(str(e))
                 self.failures += 1
             else:
diff --git a/swift/common/bufferedhttp.py b/swift/common/bufferedhttp.py
index e3a4b972a6..b302acf1f1 100644
--- a/swift/common/bufferedhttp.py
+++ b/swift/common/bufferedhttp.py
@@ -130,7 +130,7 @@ def http_connect(ipaddr, port, device, partition, method, path,
     if isinstance(path, unicode):
         try:
             path = path.encode("utf-8")
-        except UnicodeError, e:
+        except UnicodeError as e:
             logging.exception(_('Error encoding to UTF-8: %s'), str(e))
     path = quote('/' + device + '/' + str(partition) + path)
     return http_connect_raw(
diff --git a/swift/common/db.py b/swift/common/db.py
index c7685ba4da..43c1571405 100644
--- a/swift/common/db.py
+++ b/swift/common/db.py
@@ -95,7 +95,7 @@ class GreenDBConnection(sqlite3.Connection):
             while True:
                 try:
                     return call()
-                except sqlite3.OperationalError, e:
+                except sqlite3.OperationalError as e:
                     if 'locked' not in str(e):
                         raise
                 sleep(0.05)
@@ -305,7 +305,7 @@ class DatabaseBroker(object):
                                  os.path.basename(self.db_dir))
         try:
             renamer(self.db_dir, quar_path)
-        except OSError, e:
+        except OSError as e:
             if e.errno not in (errno.EEXIST, errno.ENOTEMPTY):
                 raise
             quar_path = "%s-%s" % (quar_path, uuid4().hex)
@@ -480,7 +480,7 @@ class DatabaseBroker(object):
         with self.get() as conn:
             try:
                 curs = conn.execute(query_part1 + 'metadata' + query_part2)
-            except sqlite3.OperationalError, err:
+            except sqlite3.OperationalError as err:
                 if 'no such column: metadata' not in str(err):
                     raise
                 curs = conn.execute(query_part1 + "'' as metadata" +
@@ -518,7 +518,7 @@ class DatabaseBroker(object):
                     self.merge_items(item_list)
                 try:
                     os.ftruncate(fp.fileno(), 0)
-                except OSError, err:
+                except OSError as err:
                     if err.errno != errno.ENOENT:
                         raise
 
@@ -605,7 +605,7 @@ class DatabaseBroker(object):
             try:
                 metadata = conn.execute('SELECT metadata FROM %s_stat' %
                                         self.db_type).fetchone()[0]
-            except sqlite3.OperationalError, err:
+            except sqlite3.OperationalError as err:
                 if 'no such column: metadata' not in str(err):
                     raise
                 metadata = ''
@@ -638,7 +638,7 @@ class DatabaseBroker(object):
                                   self.db_type).fetchone()[0]
                 md = json.loads(md) if md else {}
                 utf8encodekeys(md)
-            except sqlite3.OperationalError, err:
+            except sqlite3.OperationalError as err:
                 if 'no such column: metadata' not in str(err):
                     raise
                 conn.execute("""
@@ -678,7 +678,7 @@ class DatabaseBroker(object):
                 conn.execute('''
                     DELETE FROM incoming_sync WHERE updated_at < ?
                 ''', (sync_timestamp,))
-            except sqlite3.OperationalError, err:
+            except sqlite3.OperationalError as err:
                 # Old dbs didn't have updated_at in the _sync tables.
                 if 'no such column: updated_at' not in str(err):
                     raise
@@ -713,7 +713,7 @@ class DatabaseBroker(object):
                     conn.execute('UPDATE %s_stat SET metadata = ?' %
                                  self.db_type, (json.dumps(md),))
                     return True
-        except sqlite3.OperationalError, err:
+        except sqlite3.OperationalError as err:
             if 'no such column: metadata' not in str(err):
                 raise
         return False
@@ -915,7 +915,7 @@ class ContainerBroker(DatabaseBroker):
         pending_size = 0
         try:
             pending_size = os.path.getsize(self.pending_file)
-        except OSError, err:
+        except OSError as err:
             if err.errno != errno.ENOENT:
                 raise
         if pending_size > PENDING_CAP:
@@ -978,7 +978,7 @@ class ContainerBroker(DatabaseBroker):
                             id, %s
                         FROM container_stat
                     ''' % (trailing,)).fetchone()
-                except sqlite3.OperationalError, err:
+                except sqlite3.OperationalError as err:
                     if 'no such column: x_container_sync_point' in str(err):
                         trailing = '-1 AS x_container_sync_point1, ' \
                                    '-1 AS x_container_sync_point2'
@@ -998,7 +998,7 @@ class ContainerBroker(DatabaseBroker):
                 try:
                     self._set_x_container_sync_points(conn, sync_point1,
                                                       sync_point2)
-                except sqlite3.OperationalError, err:
+                except sqlite3.OperationalError as err:
                     if 'no such column: x_container_sync_point' not in \
                             str(err):
                         raise
@@ -1377,7 +1377,7 @@ class AccountBroker(DatabaseBroker):
         pending_size = 0
         try:
             pending_size = os.path.getsize(self.pending_file)
-        except OSError, err:
+        except OSError as err:
             if err.errno != errno.ENOENT:
                 raise
         if pending_size > PENDING_CAP:
diff --git a/swift/common/db_replicator.py b/swift/common/db_replicator.py
index 00d0bc277d..41904e027b 100644
--- a/swift/common/db_replicator.py
+++ b/swift/common/db_replicator.py
@@ -60,7 +60,7 @@ def quarantine_db(object_file, server_type):
                      server_type + 's', os.path.basename(object_dir)))
     try:
         renamer(object_dir, quarantine_dir)
-    except OSError, e:
+    except OSError as e:
         if e.errno not in (errno.EEXIST, errno.ENOTEMPTY):
             raise
         quarantine_dir = "%s-%s" % (quarantine_dir, uuid.uuid4().hex)
@@ -430,7 +430,7 @@ class Replicator(Daemon):
                 self.logger.error(
                     'Found %s for %s when it should be on partition %s; will '
                     'replicate out and remove.' % (object_file, name, bpart))
-        except (Exception, Timeout), e:
+        except (Exception, Timeout) as e:
             if 'no such table' in str(e):
                 self.logger.error(_('Quarantining DB %s'), object_file)
                 quarantine_db(broker.db_file, broker.db_type)
@@ -495,7 +495,7 @@ class Replicator(Daemon):
             shutil.rmtree(hash_dir, True)
         try:
             os.rmdir(suf_dir)
-        except OSError, err:
+        except OSError as err:
             if err.errno not in (errno.ENOENT, errno.ENOTEMPTY):
                 self.logger.exception(
                     _('ERROR while trying to clean up %s') % suf_dir)
@@ -604,7 +604,7 @@ class ReplicatorRpc(object):
         timemark = time.time()
         try:
             info = broker.get_replication_info()
-        except (Exception, Timeout), e:
+        except (Exception, Timeout) as e:
             if 'no such table' in str(e):
                 self.logger.error(_("Quarantining DB %s") % broker.db_file)
                 quarantine_db(broker.db_file, broker.db_type)
diff --git a/swift/common/direct_client.py b/swift/common/direct_client.py
index d85c7016de..36e495ca79 100644
--- a/swift/common/direct_client.py
+++ b/swift/common/direct_client.py
@@ -469,12 +469,12 @@ def retry(func, *args, **kwargs):
         attempts += 1
         try:
             return attempts, func(*args, **kwargs)
-        except (socket.error, HTTPException, Timeout), err:
+        except (socket.error, HTTPException, Timeout) as err:
             if error_log:
                 error_log(err)
             if attempts > retries:
                 raise
-        except ClientException, err:
+        except ClientException as err:
             if error_log:
                 error_log(err)
             if attempts > retries or not is_server_error(err.http_status) or \
diff --git a/swift/common/manager.py b/swift/common/manager.py
index 3672b7761a..b080da6f8b 100644
--- a/swift/common/manager.py
+++ b/swift/common/manager.py
@@ -100,7 +100,7 @@ def watch_server_pids(server_pids, interval=1, **kwargs):
                 try:
                     # let pid stop if it wants to
                     os.waitpid(pid, os.WNOHANG)
-                except OSError, e:
+                except OSError as e:
                     if e.errno not in (errno.ECHILD, errno.ESRCH):
                         raise  # else no such child/process
             # check running pids for server
@@ -443,7 +443,7 @@ class Server():
                     print _('Signal %s  pid: %s  signal: %s') % (self.server,
                                                                  pid, sig)
                 os.kill(pid, sig)
-            except OSError, e:
+            except OSError as e:
                 if e.errno == errno.ESRCH:
                     # pid does not exist
                     if kwargs.get('verbose'):
@@ -611,7 +611,7 @@ class Server():
             print '%s...(%s)' % (msg, conf_file)
             try:
                 pid = self.spawn(conf_file, **kwargs)
-            except OSError, e:
+            except OSError as e:
                 if e.errno == errno.ENOENT:
                     #TODO(clayg): should I check if self.cmd exists earlier?
                     print _("%s does not exist") % self.cmd
diff --git a/swift/common/memcached.py b/swift/common/memcached.py
index 1b986b85cc..3e5eb13afd 100644
--- a/swift/common/memcached.py
+++ b/swift/common/memcached.py
@@ -174,7 +174,7 @@ class MemcacheRing(object):
                     sock.connect((host, int(port)))
                     sock.settimeout(self._io_timeout)
                     yield server, sock.makefile(), sock
-                except Exception, e:
+                except Exception as e:
                     self._exception_occurred(
                         server, e, action='connecting', sock=sock)
 
@@ -221,7 +221,7 @@ class MemcacheRing(object):
                              (key, flags, timeout, len(value), value))
                 self._return_conn(server, fp, sock)
                 return
-            except Exception, e:
+            except Exception as e:
                 self._exception_occurred(server, e, sock=sock, fp=fp)
 
     def get(self, key):
@@ -254,7 +254,7 @@ class MemcacheRing(object):
                     line = fp.readline().strip().split()
                 self._return_conn(server, fp, sock)
                 return value
-            except Exception, e:
+            except Exception as e:
                 self._exception_occurred(server, e, sock=sock, fp=fp)
 
     def incr(self, key, delta=1, time=0, timeout=0):
@@ -306,7 +306,7 @@ class MemcacheRing(object):
                     ret = int(line[0].strip())
                 self._return_conn(server, fp, sock)
                 return ret
-            except Exception, e:
+            except Exception as e:
                 self._exception_occurred(server, e, sock=sock, fp=fp)
         raise MemcacheConnectionError("No Memcached connections succeeded.")
 
@@ -343,7 +343,7 @@ class MemcacheRing(object):
                 sock.sendall('delete %s noreply\r\n' % key)
                 self._return_conn(server, fp, sock)
                 return
-            except Exception, e:
+            except Exception as e:
                 self._exception_occurred(server, e, sock=sock, fp=fp)
 
     def set_multi(self, mapping, server_key, serialize=True, timeout=0,
@@ -391,7 +391,7 @@ class MemcacheRing(object):
                 sock.sendall(msg)
                 self._return_conn(server, fp, sock)
                 return
-            except Exception, e:
+            except Exception as e:
                 self._exception_occurred(server, e, sock=sock, fp=fp)
 
     def get_multi(self, keys, server_key):
@@ -432,5 +432,5 @@ class MemcacheRing(object):
                         values.append(None)
                 self._return_conn(server, fp, sock)
                 return values
-            except Exception, e:
+            except Exception as e:
                 self._exception_occurred(server, e, sock=sock, fp=fp)
diff --git a/swift/common/middleware/bulk.py b/swift/common/middleware/bulk.py
index 29c2ff11aa..89971ed6b5 100644
--- a/swift/common/middleware/bulk.py
+++ b/swift/common/middleware/bulk.py
@@ -343,7 +343,7 @@ class Bulk(object):
                 resp_dict['Response Status'] = HTTPBadRequest().status
                 resp_dict['Response Body'] = 'Invalid bulk delete.'
 
-        except HTTPException, err:
+        except HTTPException as err:
             resp_dict['Response Status'] = err.status
             resp_dict['Response Body'] = err.body
         except Exception:
@@ -436,7 +436,7 @@ class Bulk(object):
                                     raise HTTPBadRequest(
                                         'More than %d containers to create '
                                         'from tar.' % self.max_containers)
-                        except CreateContainerError, err:
+                        except CreateContainerError as err:
                             # the object PUT to this container still may
                             # succeed if acls are set
                             container_failure = [
@@ -483,10 +483,10 @@ class Bulk(object):
                 resp_dict['Response Status'] = HTTPBadRequest().status
                 resp_dict['Response Body'] = 'Invalid Tar File: No Valid Files'
 
-        except HTTPException, err:
+        except HTTPException as err:
             resp_dict['Response Status'] = err.status
             resp_dict['Response Body'] = err.body
-        except tarfile.TarError, tar_error:
+        except tarfile.TarError as tar_error:
             resp_dict['Response Status'] = HTTPBadRequest().status
             resp_dict['Response Body'] = 'Invalid Tar File: %s' % tar_error
         except Exception:
diff --git a/swift/common/middleware/catch_errors.py b/swift/common/middleware/catch_errors.py
index 8401c683ea..1141a2f30f 100644
--- a/swift/common/middleware/catch_errors.py
+++ b/swift/common/middleware/catch_errors.py
@@ -35,7 +35,7 @@ class CatchErrorsContext(WSGIContext):
         try:
             # catch any errors in the pipeline
             resp = self._app_call(env)
-        except (Exception, Timeout), err:
+        except (Exception, Timeout) as err:
             self.logger.exception(_('Error: %s'), err)
             resp = HTTPServerError(request=Request(env),
                                    body='An error occurred',
diff --git a/swift/common/middleware/formpost.py b/swift/common/middleware/formpost.py
index 05311a97e0..dd0e84d35e 100644
--- a/swift/common/middleware/formpost.py
+++ b/swift/common/middleware/formpost.py
@@ -320,7 +320,7 @@ class FormPost(object):
                         env, attrs['boundary'])
                     start_response(status, headers)
                     return body
-            except (FormInvalid, EOFError), err:
+            except (FormInvalid, EOFError) as err:
                 body = 'FormPost: %s' % err
                 start_response(
                     '400 Bad Request',
diff --git a/swift/common/middleware/ratelimit.py b/swift/common/middleware/ratelimit.py
index 430005359e..e22dd5d5f3 100644
--- a/swift/common/middleware/ratelimit.py
+++ b/swift/common/middleware/ratelimit.py
@@ -231,7 +231,7 @@ class RateLimitMiddleware(object):
                          'container': container_name, 'object': obj_name})
                 if need_to_sleep > 0:
                     eventlet.sleep(need_to_sleep)
-            except MaxSleepTimeHitError, e:
+            except MaxSleepTimeHitError as e:
                 self.logger.error(
                     _('Returning 498 for %(meth)s to %(acc)s/%(cont)s/%(obj)s '
                       '. Ratelimit (Max Sleep) %(e)s'),
diff --git a/swift/common/middleware/recon.py b/swift/common/middleware/recon.py
index 9bb4d47d4f..504c6e0831 100644
--- a/swift/common/middleware/recon.py
+++ b/swift/common/middleware/recon.py
@@ -228,7 +228,7 @@ class ReconMiddleware(object):
                             md5sum.update(block)
                             block = f.read(4096)
                     sums[ringfile] = md5sum.hexdigest()
-                except IOError, err:
+                except IOError as err:
                     sums[ringfile] = None
                     if err.errno != errno.ENOENT:
                         self.logger.exception(_('Error reading ringfile'))
diff --git a/swift/common/middleware/slo.py b/swift/common/middleware/slo.py
index 34ff158d26..48760867b5 100644
--- a/swift/common/middleware/slo.py
+++ b/swift/common/middleware/slo.py
@@ -428,7 +428,7 @@ class StaticLargeObject(object):
                         body='X-Static-Large-Object is a reserved header. '
                         'To create a static large object add query param '
                         'multipart-manifest=put.')
-        except HTTPException, err_resp:
+        except HTTPException as err_resp:
             return err_resp(env, start_response)
 
         return self.app(env, start_response)
diff --git a/swift/common/swob.py b/swift/common/swob.py
index 25435fd1fe..a10bb2af53 100644
--- a/swift/common/swob.py
+++ b/swift/common/swob.py
@@ -1184,7 +1184,7 @@ def wsgify(func):
         def _wsgify_self(self, env, start_response):
             try:
                 return func(self, Request(env))(env, start_response)
-            except HTTPException, err_resp:
+            except HTTPException as err_resp:
                 return err_resp(env, start_response)
         return _wsgify_self
     else:
@@ -1192,7 +1192,7 @@ def wsgify(func):
         def _wsgify_bare(env, start_response):
             try:
                 return func(Request(env))(env, start_response)
-            except HTTPException, err_resp:
+            except HTTPException as err_resp:
                 return err_resp(env, start_response)
         return _wsgify_bare
 
diff --git a/swift/common/utils.py b/swift/common/utils.py
index 6e8cb91088..f316cc8d45 100644
--- a/swift/common/utils.py
+++ b/swift/common/utils.py
@@ -447,7 +447,7 @@ def mkdirs(path):
     if not os.path.isdir(path):
         try:
             os.makedirs(path)
-        except OSError, err:
+        except OSError as err:
             if err.errno != errno.EEXIST or not os.path.isdir(path):
                 raise
 
@@ -924,7 +924,7 @@ def get_logger(conf, name=None, log_to_console=False, log_route=None,
         log_address = conf.get('log_address', '/dev/log')
         try:
             handler = SysLogHandler(address=log_address, facility=facility)
-        except socket.error, e:
+        except socket.error as e:
             # Either /dev/log isn't a UNIX socket or it does not exist at all
             if e.errno not in [errno.ENOTSOCK, errno.ENOENT]:
                 raise e
@@ -1200,7 +1200,7 @@ def lock_path(directory, timeout=10):
                 try:
                     fcntl.flock(fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
                     break
-                except IOError, err:
+                except IOError as err:
                     if err.errno != errno.EAGAIN:
                         raise
                 sleep(0.01)
@@ -1235,7 +1235,7 @@ def lock_file(filename, timeout=10, append=False, unlink=True):
                 try:
                     fcntl.flock(fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
                     break
-                except IOError, err:
+                except IOError as err:
                     if err.errno != errno.EAGAIN:
                         raise
                 sleep(0.01)
@@ -1499,7 +1499,7 @@ def write_file(path, contents):
     if not os.path.exists(dirname):
         try:
             os.makedirs(dirname)
-        except OSError, err:
+        except OSError as err:
             if err.errno == errno.EACCES:
                 sys.exit('Unable to create %s.  Running as '
                          'non-root?' % dirname)
@@ -1821,7 +1821,7 @@ def dump_recon_cache(cache_dict, cache_file, logger, lock_timeout=2):
             finally:
                 try:
                     os.unlink(tf.name)
-                except OSError, err:
+                except OSError as err:
                     if err.errno != errno.ENOENT:
                         raise
     except (Exception, Timeout):
@@ -1831,7 +1831,7 @@ def dump_recon_cache(cache_dict, cache_file, logger, lock_timeout=2):
 def listdir(path):
     try:
         return os.listdir(path)
-    except OSError, err:
+    except OSError as err:
         if err.errno != errno.ENOENT:
             raise
     return []
@@ -2020,7 +2020,7 @@ def tpool_reraise(func, *args, **kwargs):
     def inner():
         try:
             return func(*args, **kwargs)
-        except BaseException, err:
+        except BaseException as err:
             return err
     resp = tpool.execute(inner)
     if isinstance(resp, BaseException):
@@ -2093,7 +2093,7 @@ class ThreadPool(object):
             try:
                 result = func(*args, **kwargs)
                 result_queue.put((ev, True, result))
-            except BaseException, err:
+            except BaseException as err:
                 result_queue.put((ev, False, err))
             finally:
                 work_queue.task_done()
diff --git a/swift/common/wsgi.py b/swift/common/wsgi.py
index c804378a36..4d40602fbf 100644
--- a/swift/common/wsgi.py
+++ b/swift/common/wsgi.py
@@ -158,7 +158,7 @@ def get_socket(conf, default_port=8080):
                 warn_ssl = True
                 sock = ssl.wrap_socket(sock, certfile=conf['cert_file'],
                                        keyfile=conf['key_file'])
-        except socket.error, err:
+        except socket.error as err:
             if err.args[0] != errno.EADDRINUSE:
                 raise
             sleep(0.1)
@@ -225,7 +225,7 @@ def run_server(conf, logger, sock):
     pool = RestrictedGreenPool(size=max_clients)
     try:
         wsgi.server(sock, app, NullLogger(), custom_pool=pool)
-    except socket.error, err:
+    except socket.error as err:
         if err[0] != errno.EINVAL:
             raise
     pool.waitall()
@@ -243,7 +243,7 @@ def run_wsgi(conf_path, app_section, *args, **kwargs):
     try:
         (conf, logger, log_name) = \
             _initrp(conf_path, app_section, *args, **kwargs)
-    except ConfigFileError, e:
+    except ConfigFileError as e:
         print e
         return
 
@@ -303,7 +303,7 @@ def run_wsgi(conf_path, app_section, *args, **kwargs):
             if os.WIFEXITED(status) or os.WIFSIGNALED(status):
                 logger.error('Removing dead child %s' % pid)
                 children.remove(pid)
-        except OSError, err:
+        except OSError as err:
             if err.errno not in (errno.EINTR, errno.ECHILD):
                 raise
         except KeyboardInterrupt:
@@ -321,7 +321,7 @@ class ConfigFileError(Exception):
 def _initrp(conf_path, app_section, *args, **kwargs):
     try:
         conf = appconfig(conf_path, name=app_section)
-    except Exception, e:
+    except Exception as e:
         raise ConfigFileError("Error trying to load config from %s: %s" %
                               (conf_path, e))
 
diff --git a/swift/container/server.py b/swift/container/server.py
index 304a4a2fdb..702d2962e8 100644
--- a/swift/container/server.py
+++ b/swift/container/server.py
@@ -430,7 +430,7 @@ class ContainerController(object):
             return HTTPInsufficientStorage(drive=drive, request=req)
         try:
             args = json.load(req.environ['wsgi.input'])
-        except ValueError, err:
+        except ValueError as err:
             return HTTPBadRequest(body=str(err), content_type='text/plain')
         ret = self.replicator_rpc.dispatch(post_args, args)
         ret.request = req
diff --git a/swift/container/sync.py b/swift/container/sync.py
index 0bbf7f49c4..0272174ea4 100644
--- a/swift/container/sync.py
+++ b/swift/container/sync.py
@@ -323,7 +323,7 @@ class ContainerSync(Daemon):
                                   headers={'x-timestamp': row['created_at'],
                                            'x-container-sync-key': sync_key},
                                   proxy=self.proxy)
-                except ClientException, err:
+                except ClientException as err:
                     if err.http_status != HTTP_NOT_FOUND:
                         raise
                 self.container_deletes += 1
@@ -348,14 +348,14 @@ class ContainerSync(Daemon):
                             timestamp = this_timestamp
                             headers = these_headers
                             body = this_body
-                    except ClientException, err:
+                    except ClientException as err:
                         # If any errors are not 404, make sure we report the
                         # non-404 one. We don't want to mistakenly assume the
                         # object no longer exists just because one says so and
                         # the others errored for some other reason.
                         if not exc or exc.http_status == HTTP_NOT_FOUND:
                             exc = err
-                    except (Exception, Timeout), err:
+                    except (Exception, Timeout) as err:
                         exc = err
                 if timestamp < looking_for_timestamp:
                     if exc:
@@ -380,7 +380,7 @@ class ContainerSync(Daemon):
                 self.container_puts += 1
                 self.logger.increment('puts')
                 self.logger.timing_since('puts.timing', start_time)
-        except ClientException, err:
+        except ClientException as err:
             if err.http_status == HTTP_UNAUTHORIZED:
                 self.logger.info(
                     _('Unauth %(sync_from)r => %(sync_to)r'),
@@ -401,7 +401,7 @@ class ContainerSync(Daemon):
             self.container_failures += 1
             self.logger.increment('failures')
             return False
-        except (Exception, Timeout), err:
+        except (Exception, Timeout) as err:
             self.logger.exception(
                 _('ERROR Syncing %(db_file)s %(row)s'),
                 {'db_file': broker.db_file, 'row': row})
diff --git a/swift/obj/diskfile.py b/swift/obj/diskfile.py
index b116c9a044..531f4e1dd9 100644
--- a/swift/obj/diskfile.py
+++ b/swift/obj/diskfile.py
@@ -102,7 +102,7 @@ def quarantine_renamer(device_path, corrupted_file_path):
     invalidate_hash(dirname(from_dir))
     try:
         renamer(from_dir, to_dir)
-    except OSError, e:
+    except OSError as e:
         if e.errno not in (errno.EEXIST, errno.ENOTEMPTY):
             raise
         to_dir = "%s-%s" % (to_dir, uuid.uuid4().hex)
@@ -156,7 +156,7 @@ def hash_suffix(path, reclaim_age):
     md5 = hashlib.md5()
     try:
         path_contents = sorted(os.listdir(path))
-    except OSError, err:
+    except OSError as err:
         if err.errno in (errno.ENOTDIR, errno.ENOENT):
             raise PathNotDir()
         raise
@@ -164,7 +164,7 @@ def hash_suffix(path, reclaim_age):
         hsh_path = join(path, hsh)
         try:
             files = hash_cleanup_listdir(hsh_path, reclaim_age)
-        except OSError, err:
+        except OSError as err:
             if err.errno == errno.ENOTDIR:
                 partition_path = dirname(path)
                 objects_path = dirname(partition_path)
@@ -601,7 +601,7 @@ class DiskFile(object):
             try:
                 if verify_file:
                     self._handle_close_quarantine()
-            except (Exception, Timeout), e:
+            except (Exception, Timeout) as e:
                 self.logger.error(_(
                     'ERROR DiskFile %(data_file)s in '
                     '%(data_dir)s close failure: %(exc)s : %(stack)s'),
@@ -720,7 +720,7 @@ class DiskFile(object):
                             'Content-Length of %s does not match file size '
                             'of %s' % (metadata_size, file_size))
                 return file_size
-        except OSError, err:
+        except OSError as err:
             if err.errno != errno.ENOENT:
                 raise
         raise DiskFileNotExist('Data File does not exist.')
diff --git a/swift/obj/expirer.py b/swift/obj/expirer.py
index 959d9ba092..9928520d71 100644
--- a/swift/obj/expirer.py
+++ b/swift/obj/expirer.py
@@ -134,7 +134,7 @@ class ObjectExpirer(Daemon):
                         self.expiring_objects_account,
                         container,
                         acceptable_statuses=(2, HTTP_NOT_FOUND, HTTP_CONFLICT))
-                except (Exception, Timeout), err:
+                except (Exception, Timeout) as err:
                     self.logger.exception(
                         _('Exception while deleting container %s %s') %
                         (container, str(err)))
@@ -205,7 +205,7 @@ class ObjectExpirer(Daemon):
                                      container, obj)
             self.report_objects += 1
             self.logger.increment('objects')
-        except (Exception, Timeout), err:
+        except (Exception, Timeout) as err:
             self.logger.increment('errors')
             self.logger.exception(
                 _('Exception while deleting object %s %s %s') %
diff --git a/swift/proxy/controllers/container.py b/swift/proxy/controllers/container.py
index 049c289431..a20a782452 100644
--- a/swift/proxy/controllers/container.py
+++ b/swift/proxy/controllers/container.py
@@ -64,7 +64,7 @@ class ContainerController(Controller):
                         req.headers[header] = \
                             req.environ['swift.clean_acl'](header,
                                                            req.headers[header])
-                    except ValueError, err:
+                    except ValueError as err:
                         return HTTPBadRequest(request=req, body=str(err))
         return None
 
diff --git a/swift/proxy/controllers/obj.py b/swift/proxy/controllers/obj.py
index c2171f73c7..77dbeb90a4 100644
--- a/swift/proxy/controllers/obj.py
+++ b/swift/proxy/controllers/obj.py
@@ -240,7 +240,7 @@ class SegmentedIterable(object):
             self.segment_iter_swift_conn = getattr(resp, 'swift_conn', None)
         except StopIteration:
             raise
-        except SegmentError, err:
+        except SegmentError as err:
             if not getattr(err, 'swift_logged', False):
                 self.controller.app.logger.error(_(
                     'ERROR: While processing manifest '
@@ -251,7 +251,7 @@ class SegmentedIterable(object):
                 err.swift_logged = True
                 self.response.status_int = HTTP_CONFLICT
             raise
-        except (Exception, Timeout), err:
+        except (Exception, Timeout) as err:
             if not getattr(err, 'swift_logged', False):
                 self.controller.app.logger.exception(_(
                     'ERROR: While processing manifest '
@@ -298,7 +298,7 @@ class SegmentedIterable(object):
                 # created an invalid condition.
                 yield ' '
             raise
-        except (Exception, Timeout), err:
+        except (Exception, Timeout) as err:
             if not getattr(err, 'swift_logged', False):
                 self.controller.app.logger.exception(_(
                     'ERROR: While processing manifest '
@@ -360,7 +360,7 @@ class SegmentedIterable(object):
                 self.segment_iter = None
         except StopIteration:
             raise
-        except (Exception, Timeout), err:
+        except (Exception, Timeout) as err:
             if not getattr(err, 'swift_logged', False):
                 self.controller.app.logger.exception(_(
                     'ERROR: While processing manifest '
@@ -568,7 +568,7 @@ class ObjectController(Controller):
                                           self._remaining_items(pages_iter))
             except ListingIterNotFound:
                 return HTTPNotFound(request=req)
-            except ListingIterNotAuthorized, err:
+            except ListingIterNotAuthorized as err:
                 return err.aresp
             except ListingIterError:
                 return HTTPServerError(request=req)
@@ -1068,7 +1068,7 @@ class ObjectController(Controller):
                     if conn.queue.unfinished_tasks:
                         conn.queue.join()
             conns = [conn for conn in conns if not conn.failed]
-        except ChunkReadTimeout, err:
+        except ChunkReadTimeout as err:
             self.app.logger.warn(
                 _('ERROR Client read timeout (%ss)'), err.seconds)
             self.app.logger.increment('client_timeouts')
@@ -1156,7 +1156,7 @@ class ObjectController(Controller):
             except ListingIterNotFound:
                 # no worries, last_item is None
                 pass
-            except ListingIterNotAuthorized, err:
+            except ListingIterNotAuthorized as err:
                 return err.aresp
             except ListingIterError:
                 return HTTPServerError(request=req)
diff --git a/test/functional/swift_test_client.py b/test/functional/swift_test_client.py
index 6f11762e12..f9e031b67b 100644
--- a/test/functional/swift_test_client.py
+++ b/test/functional/swift_test_client.py
@@ -721,7 +721,7 @@ class File(Base):
                     callback(transferred, self.size)
 
             self.conn.put_end()
-        except socket.timeout, err:
+        except socket.timeout as err:
             raise err
 
         if (self.conn.response.status < 200) or \
diff --git a/test/functional/tests.py b/test/functional/tests.py
index 9728379e60..3707082dc6 100644
--- a/test/functional/tests.py
+++ b/test/functional/tests.py
@@ -100,7 +100,7 @@ def timeout(seconds, method, *args, **kwargs):
         def run(self):
             try:
                 self.method(*self.args, **self.kwargs)
-            except Exception, e:
+            except Exception as e:
                 self.exception = e
 
     t = TimeoutThread(method, *args, **kwargs)
diff --git a/test/functionalnosetests/swift_testing.py b/test/functionalnosetests/swift_testing.py
index 837af997f8..eabd3476df 100644
--- a/test/functionalnosetests/swift_testing.py
+++ b/test/functionalnosetests/swift_testing.py
@@ -60,13 +60,13 @@ if conf:
                 '%s:' % conf['account2'] if 'account2' in conf else '',
                 conf['username2'])
             swift_test_key[1] = conf['password2']
-        except KeyError, err:
+        except KeyError as err:
             pass  # old conf, no second account tests can be run
         try:
             swift_test_user[2] = '%s%s' % ('%s:' % conf['account'] if 'account'
                                            in conf else '', conf['username3'])
             swift_test_key[2] = conf['password3']
-        except KeyError, err:
+        except KeyError as err:
             pass  # old conf, no third account tests can be run
 
         for _ in range(3):
diff --git a/test/functionalnosetests/test_container.py b/test/functionalnosetests/test_container.py
index c3bd527f9d..9e344831e0 100755
--- a/test/functionalnosetests/test_container.py
+++ b/test/functionalnosetests/test_container.py
@@ -426,7 +426,7 @@ class TestContainer(unittest.TestCase):
         try:
             resp = retry(get)
             raise Exception('Should not have been able to GET')
-        except Exception, err:
+        except Exception as err:
             self.assert_(str(err).startswith('No result after '), err)
 
         def post(url, token, parsed, conn):
@@ -453,7 +453,7 @@ class TestContainer(unittest.TestCase):
         try:
             resp = retry(get)
             raise Exception('Should not have been able to GET')
-        except Exception, err:
+        except Exception as err:
             self.assert_(str(err).startswith('No result after '), err)
 
     def test_cross_account_container(self):
diff --git a/test/functionalnosetests/test_object.py b/test/functionalnosetests/test_object.py
index 36f839aa15..17e58c8233 100755
--- a/test/functionalnosetests/test_object.py
+++ b/test/functionalnosetests/test_object.py
@@ -168,7 +168,7 @@ class TestObject(unittest.TestCase):
         try:
             resp = retry(get)
             raise Exception('Should not have been able to GET')
-        except Exception, err:
+        except Exception as err:
             self.assert_(str(err).startswith('No result after '))
 
         def post(url, token, parsed, conn):
@@ -193,7 +193,7 @@ class TestObject(unittest.TestCase):
         try:
             resp = retry(get)
             raise Exception('Should not have been able to GET')
-        except Exception, err:
+        except Exception as err:
             self.assert_(str(err).startswith('No result after '))
 
     def test_private_object(self):
diff --git a/test/probe/common.py b/test/probe/common.py
index 71d3bfbcbd..8a88a902cb 100644
--- a/test/probe/common.py
+++ b/test/probe/common.py
@@ -70,7 +70,7 @@ def check_server(port, port2server, pids, timeout=CHECK_SERVER_TIMEOUT):
                     raise Exception(
                         'Unexpected status %s' % resp.status)
                 break
-            except Exception, err:
+            except Exception as err:
                 if time() > try_until:
                     print err
                     print 'Giving up on %s:%s after %s seconds.' % (
@@ -86,7 +86,7 @@ def check_server(port, port2server, pids, timeout=CHECK_SERVER_TIMEOUT):
                 account = url.split('/')[-1]
                 head_account(url, token)
                 return url, token, account
-            except Exception, err:
+            except Exception as err:
                 if time() > try_until:
                     print err
                     print 'Giving up on proxy:8080 after 30 seconds.'
@@ -98,7 +98,7 @@ def check_server(port, port2server, pids, timeout=CHECK_SERVER_TIMEOUT):
 def kill_server(port, port2server, pids):
     try:
         kill(pids[port2server[port]], SIGTERM)
-    except Exception, err:
+    except Exception as err:
         print err
     try_until = time() + 30
     while True:
@@ -106,7 +106,7 @@ def kill_server(port, port2server, pids):
             conn = HTTPConnection('127.0.0.1', port)
             conn.request('GET', '/')
             conn.getresponse()
-        except Exception, err:
+        except Exception as err:
             break
         if time() > try_until:
             raise Exception(
diff --git a/test/probe/test_container_failures.py b/test/probe/test_container_failures.py
index e71d11bf75..fe0feeed4d 100755
--- a/test/probe/test_container_failures.py
+++ b/test/probe/test_container_failures.py
@@ -107,7 +107,7 @@ class TestContainerFailures(TestCase):
             try:
                 direct_client.direct_get_container(cnode, cpart, self.account,
                                                    container1)
-            except client.ClientException, err:
+            except client.ClientException as err:
                 exc = err
             self.assertEquals(exc.http_status, 404)
         headers, containers = client.get_account(self.url, self.token)
@@ -147,7 +147,7 @@ class TestContainerFailures(TestCase):
                 exc = None
                 try:
                     client.delete_container(self.url, self.token, container)
-                except client.ClientException, err:
+                except client.ClientException as err:
                     exc = err
                 self.assertEquals(exc.http_status, 503)
             else:
@@ -160,7 +160,7 @@ class TestContainerFailures(TestCase):
                 pool.spawn(run_test, 2, True)
                 pool.spawn(run_test, 3, True)
                 pool.waitall()
-        except Timeout, err:
+        except Timeout as err:
             raise Exception(
                 "The server did not return a 503 on container db locks, "
                 "it just hangs: %s" % err)
diff --git a/test/probe/test_empty_device_handoff.py b/test/probe/test_empty_device_handoff.py
index 5cb25d7083..74bc3c2bee 100644
--- a/test/probe/test_empty_device_handoff.py
+++ b/test/probe/test_empty_device_handoff.py
@@ -118,7 +118,7 @@ class TestEmptyDevice(TestCase):
         try:
             direct_client.direct_get_object(onode, opart, self.account,
                                             container, obj)
-        except direct_client.ClientException, err:
+        except direct_client.ClientException as err:
             exc = err
         self.assertEquals(exc.http_status, 404)
         self.assertFalse(os.path.exists(obj_dir))
@@ -147,7 +147,7 @@ class TestEmptyDevice(TestCase):
         try:
             direct_client.direct_get_object(another_onode, opart, self.account,
                                             container, obj)
-        except direct_client.ClientException, err:
+        except direct_client.ClientException as err:
             exc = err
         self.assertEquals(exc.http_status, 404)
 
diff --git a/test/probe/test_object_failures.py b/test/probe/test_object_failures.py
index 7b5e7ed175..e7f6bf5bf1 100755
--- a/test/probe/test_object_failures.py
+++ b/test/probe/test_object_failures.py
@@ -80,7 +80,7 @@ class TestObjectFailures(TestCase):
             direct_client.direct_get_object(onode, opart, self.account,
                                             container, obj)
             raise Exception("Did not quarantine object")
-        except client.ClientException, err:
+        except client.ClientException as err:
             self.assertEquals(err.http_status, 404)
 
     def run_quarantine_range_etag(self):
@@ -104,7 +104,7 @@ class TestObjectFailures(TestCase):
             direct_client.direct_get_object(onode, opart, self.account,
                                             container, obj)
             raise Exception("Did not quarantine object")
-        except client.ClientException, err:
+        except client.ClientException as err:
             self.assertEquals(err.http_status, 404)
 
     def run_quarantine_zero_byte_get(self):
@@ -122,7 +122,7 @@ class TestObjectFailures(TestCase):
                                             container, obj, conn_timeout=1,
                                             response_timeout=1)
             raise Exception("Did not quarantine object")
-        except client.ClientException, err:
+        except client.ClientException as err:
             self.assertEquals(err.http_status, 404)
 
     def run_quarantine_zero_byte_head(self):
@@ -140,7 +140,7 @@ class TestObjectFailures(TestCase):
                                              container, obj, conn_timeout=1,
                                              response_timeout=1)
             raise Exception("Did not quarantine object")
-        except client.ClientException, err:
+        except client.ClientException as err:
             self.assertEquals(err.http_status, 404)
 
     def run_quarantine_zero_byte_post(self):
@@ -161,7 +161,7 @@ class TestObjectFailures(TestCase):
                 conn_timeout=1,
                 response_timeout=1)
             raise Exception("Did not quarantine object")
-        except client.ClientException, err:
+        except client.ClientException as err:
             self.assertEquals(err.http_status, 404)
 
     def test_runner(self):
diff --git a/test/probe/test_object_handoff.py b/test/probe/test_object_handoff.py
index a213cbf7d3..cf2ae3c148 100755
--- a/test/probe/test_object_handoff.py
+++ b/test/probe/test_object_handoff.py
@@ -110,7 +110,7 @@ class TestObjectHandoff(TestCase):
         try:
             direct_client.direct_get_object(onode, opart, self.account,
                                             container, obj)
-        except direct_client.ClientException, err:
+        except direct_client.ClientException as err:
             exc = err
         self.assertEquals(exc.http_status, 404)
         # Run the extra server last so it'll remove its extra partition
@@ -142,7 +142,7 @@ class TestObjectHandoff(TestCase):
         try:
             direct_client.direct_get_object(another_onode, opart, self.account,
                                             container, obj)
-        except direct_client.ClientException, err:
+        except direct_client.ClientException as err:
             exc = err
         self.assertEquals(exc.http_status, 404)
 
@@ -151,7 +151,7 @@ class TestObjectHandoff(TestCase):
         exc = None
         try:
             client.head_object(self.url, self.token, container, obj)
-        except direct_client.ClientException, err:
+        except direct_client.ClientException as err:
             exc = err
         self.assertEquals(exc.http_status, 404)
         objs = [o['name'] for o in
@@ -189,7 +189,7 @@ class TestObjectHandoff(TestCase):
         try:
             direct_client.direct_get_object(another_onode, opart, self.account,
                                             container, obj)
-        except direct_client.ClientException, err:
+        except direct_client.ClientException as err:
             exc = err
         self.assertEquals(exc.http_status, 404)
 
diff --git a/test/unit/account/test_server.py b/test/unit/account/test_server.py
index 3827290e60..8461071409 100644
--- a/test/unit/account/test_server.py
+++ b/test/unit/account/test_server.py
@@ -41,7 +41,7 @@ class TestAccountController(unittest.TestCase):
         """Tear down for testing swift.account.server.AccountController"""
         try:
             rmtree(self.testdir)
-        except OSError, err:
+        except OSError as err:
             if err.errno != errno.ENOENT:
                 raise
 
diff --git a/test/unit/common/middleware/test_formpost.py b/test/unit/common/middleware/test_formpost.py
index 6530e98431..282497b7f5 100644
--- a/test/unit/common/middleware/test_formpost.py
+++ b/test/unit/common/middleware/test_formpost.py
@@ -89,7 +89,7 @@ class TestIterRequests(unittest.TestCase):
         exc = None
         try:
             it.next()
-        except formpost.FormInvalid, err:
+        except formpost.FormInvalid as err:
             exc = err
         self.assertEquals(str(exc), 'invalid starting boundary')
 
@@ -100,7 +100,7 @@ class TestIterRequests(unittest.TestCase):
         exc = None
         try:
             it.next()
-        except StopIteration, err:
+        except StopIteration as err:
             exc = err
         self.assertTrue(exc is not None)
 
@@ -112,7 +112,7 @@ class TestIterRequests(unittest.TestCase):
         exc = None
         try:
             it.next()
-        except StopIteration, err:
+        except StopIteration as err:
             exc = err
         self.assertTrue(exc is not None)
 
@@ -127,7 +127,7 @@ class TestIterRequests(unittest.TestCase):
         exc = None
         try:
             it.next()
-        except StopIteration, err:
+        except StopIteration as err:
             exc = err
         self.assertTrue(exc is not None)
 
@@ -146,7 +146,7 @@ class TestIterRequests(unittest.TestCase):
         exc = None
         try:
             it.next()
-        except StopIteration, err:
+        except StopIteration as err:
             exc = err
         self.assertTrue(exc is not None)
 
@@ -162,7 +162,7 @@ class TestIterRequests(unittest.TestCase):
         exc = None
         try:
             it.next()
-        except StopIteration, err:
+        except StopIteration as err:
             exc = err
         self.assertTrue(exc is not None)
 
@@ -176,7 +176,7 @@ class TestIterRequests(unittest.TestCase):
         exc = None
         try:
             it.next()
-        except StopIteration, err:
+        except StopIteration as err:
             exc = err
         self.assertTrue(exc is not None)
 
@@ -195,7 +195,7 @@ class TestIterRequests(unittest.TestCase):
         exc = None
         try:
             it.next()
-        except StopIteration, err:
+        except StopIteration as err:
             exc = err
         self.assertTrue(exc is not None)
 
@@ -217,7 +217,7 @@ class TestIterRequests(unittest.TestCase):
             exc = None
             try:
                 it.next()
-            except StopIteration, err:
+            except StopIteration as err:
                 exc = err
             self.assertTrue(exc is not None)
         finally:
@@ -234,7 +234,7 @@ class TestCappedFileLikeObject(unittest.TestCase):
         exc = None
         try:
             formpost._CappedFileLikeObject(StringIO('abc'), 2).read()
-        except EOFError, err:
+        except EOFError as err:
             exc = err
         self.assertEquals(str(exc), 'max_file_size exceeded')
 
@@ -250,7 +250,7 @@ class TestCappedFileLikeObject(unittest.TestCase):
         exc = None
         try:
             self.assertEquals(fp.readline(), 'def')
-        except EOFError, err:
+        except EOFError as err:
             exc = err
         self.assertEquals(str(exc), 'max_file_size exceeded')
 
diff --git a/test/unit/common/middleware/test_memcache.py b/test/unit/common/middleware/test_memcache.py
index c4db646d8d..27fe2aac0e 100644
--- a/test/unit/common/middleware/test_memcache.py
+++ b/test/unit/common/middleware/test_memcache.py
@@ -76,7 +76,7 @@ class TestCacheMiddleware(unittest.TestCase):
         exc = None
         try:
             memcache.MemcacheMiddleware(FakeApp(), {})
-        except Exception, err:
+        except Exception as err:
             exc = err
         finally:
             memcache.ConfigParser = orig_parser
@@ -91,7 +91,7 @@ class TestCacheMiddleware(unittest.TestCase):
             memcache.MemcacheMiddleware(
                 FakeApp(), {'memcache_servers': '1.2.3.4:5',
                             'memcache_serialization_support': '2'})
-        except Exception, err:
+        except Exception as err:
             exc = err
         finally:
             memcache.ConfigParser = orig_parser
diff --git a/test/unit/common/middleware/test_slo.py b/test/unit/common/middleware/test_slo.py
index 1139c7d78f..731dcd6180 100644
--- a/test/unit/common/middleware/test_slo.py
+++ b/test/unit/common/middleware/test_slo.py
@@ -196,7 +196,7 @@ class TestStaticLargeObject(unittest.TestCase):
         req.content_length = self.slo.max_manifest_size + 1
         try:
             self.slo.handle_multipart_put(req, fake_start_response)
-        except HTTPException, e:
+        except HTTPException as e:
             pass
         self.assertEquals(e.status_int, 413)
 
@@ -205,7 +205,7 @@ class TestStaticLargeObject(unittest.TestCase):
             e = None
             try:
                 self.slo.handle_multipart_put(req, fake_start_response)
-            except HTTPException, e:
+            except HTTPException as e:
                 pass
             self.assertEquals(e.status_int, 413)
 
@@ -213,14 +213,14 @@ class TestStaticLargeObject(unittest.TestCase):
             req = Request.blank('/v/a/c/o', body=test_json_data)
             try:
                 self.slo.handle_multipart_put(req, fake_start_response)
-            except HTTPException, e:
+            except HTTPException as e:
                 pass
             self.assertEquals(e.status_int, 400)
 
         req = Request.blank('/v/a/c/o', headers={'X-Copy-From': 'lala'})
         try:
             self.slo.handle_multipart_put(req, fake_start_response)
-        except HTTPException, e:
+        except HTTPException as e:
             pass
         self.assertEquals(e.status_int, 405)
 
@@ -346,7 +346,7 @@ class TestStaticLargeObject(unittest.TestCase):
             body=bad_data)
         try:
             self.slo.handle_multipart_put(req, fake_start_response)
-        except HTTPException, e:
+        except HTTPException as e:
             self.assertEquals(self.app.calls, 4)
             data = json.loads(e.body)
             errors = data['Errors']
diff --git a/test/unit/common/test_bufferedhttp.py b/test/unit/common/test_bufferedhttp.py
index 9dd815a652..1e7af06dd0 100644
--- a/test/unit/common/test_bufferedhttp.py
+++ b/test/unit/common/test_bufferedhttp.py
@@ -46,7 +46,7 @@ class TestBufferedHTTP(unittest.TestCase):
                     self.assertEquals(headers['content-length'], '7')
                     self.assertEquals(headers['x-header'], 'value')
                     self.assertEquals(fp.readline(), 'REQUEST\r\n')
-            except BaseException, err:
+            except BaseException as err:
                 return err
             return None
         for par in ('par', 1357):
diff --git a/test/unit/common/test_db.py b/test/unit/common/test_db.py
index 9e5beb437f..58c7a6ecdf 100644
--- a/test/unit/common/test_db.py
+++ b/test/unit/common/test_db.py
@@ -272,7 +272,7 @@ class TestDatabaseBroker(unittest.TestCase):
             try:
                 with broker.get() as conn:
                     conn.execute('SELECT * FROM test')
-            except Exception, err:
+            except Exception as err:
                 exc = err
             self.assertEquals(
                 str(exc),
@@ -288,7 +288,7 @@ class TestDatabaseBroker(unittest.TestCase):
             try:
                 with broker.get() as conn:
                     conn.execute('SELECT * FROM test')
-            except Exception, err:
+            except Exception as err:
                 exc = err
             self.assertEquals(
                 str(exc),
@@ -1727,7 +1727,7 @@ class TestContainerBrokerBeforeMetadata(TestContainerBroker):
         with broker.get() as conn:
             try:
                 conn.execute('SELECT metadata FROM container_stat')
-            except BaseException, err:
+            except BaseException as err:
                 exc = err
         self.assert_('no such column: metadata' in str(exc))
 
@@ -1802,7 +1802,7 @@ class TestContainerBrokerBeforeXSync(TestContainerBroker):
             try:
                 conn.execute('''SELECT x_container_sync_point1
                                 FROM container_stat''')
-            except BaseException, err:
+            except BaseException as err:
                 exc = err
         self.assert_('no such column: x_container_sync_point1' in str(exc))
 
@@ -2318,7 +2318,7 @@ class TestAccountBrokerBeforeMetadata(TestAccountBroker):
         with broker.get() as conn:
             try:
                 conn.execute('SELECT metadata FROM account_stat')
-            except BaseException, err:
+            except BaseException as err:
                 exc = err
         self.assert_('no such column: metadata' in str(exc))
 
diff --git a/test/unit/common/test_internal_client.py b/test/unit/common/test_internal_client.py
index d2440342a6..4c021b8d67 100644
--- a/test/unit/common/test_internal_client.py
+++ b/test/unit/common/test_internal_client.py
@@ -283,12 +283,12 @@ class TestInternalClient(unittest.TestCase):
 
             try:
                 client.make_request('GET', '/', {}, (400,))
-            except Exception, err:
+            except Exception as err:
                 pass
             self.assertEquals(200, err.resp.status_int)
             try:
                 client.make_request('GET', '/', {}, (201,))
-            except Exception, err:
+            except Exception as err:
                 pass
             self.assertEquals(200, err.resp.status_int)
         finally:
@@ -323,7 +323,7 @@ class TestInternalClient(unittest.TestCase):
             internal_client.sleep = not_sleep
             try:
                 client.make_request('PUT', '/', {}, (2,), fobj)
-            except Exception, err:
+            except Exception as err:
                 pass
             self.assertEquals(404, err.resp.status_int)
         finally:
diff --git a/test/unit/common/test_swob.py b/test/unit/common/test_swob.py
index 841556a8a1..ffdaed851d 100644
--- a/test/unit/common/test_swob.py
+++ b/test/unit/common/test_swob.py
@@ -645,11 +645,11 @@ class TestRequest(unittest.TestCase):
         self.assertEquals(_test_split_path('/a/c/', 2, 3), ['a', 'c', ''])
         try:
             _test_split_path('o\nn e', 2)
-        except ValueError, err:
+        except ValueError as err:
             self.assertEquals(str(err), 'Invalid path: o%0An%20e')
         try:
             _test_split_path('o\nn e', 2, 3, True)
-        except ValueError, err:
+        except ValueError as err:
             self.assertEquals(str(err), 'Invalid path: o%0An%20e')
 
     def test_unicode_path(self):
diff --git a/test/unit/common/test_utils.py b/test/unit/common/test_utils.py
index 26c7924b87..7134d8a52a 100644
--- a/test/unit/common/test_utils.py
+++ b/test/unit/common/test_utils.py
@@ -241,11 +241,11 @@ class TestUtils(unittest.TestCase):
         self.assertEquals(utils.split_path('/a/c/', 2, 3), ['a', 'c', ''])
         try:
             utils.split_path('o\nn e', 2)
-        except ValueError, err:
+        except ValueError as err:
             self.assertEquals(str(err), 'Invalid path: o%0An%20e')
         try:
             utils.split_path('o\nn e', 2, 3, True)
-        except ValueError, err:
+        except ValueError as err:
             self.assertEquals(str(err), 'Invalid path: o%0An%20e')
 
     def test_validate_device_partition(self):
@@ -271,11 +271,11 @@ class TestUtils(unittest.TestCase):
                           utils.validate_device_partition, 'foo', '..')
         try:
             utils.validate_device_partition('o\nn e', 'foo')
-        except ValueError, err:
+        except ValueError as err:
             self.assertEquals(str(err), 'Invalid device: o%0An%20e')
         try:
             utils.validate_device_partition('foo', 'o\nn e')
-        except ValueError, err:
+        except ValueError as err:
             self.assertEquals(str(err), 'Invalid partition: o%0An%20e')
 
     def test_NullLogger(self):
@@ -1182,7 +1182,7 @@ log_name = %(yarr)s'''
         for (value, default), expected in expectations.items():
             try:
                 rv = utils.config_auto_int_value(value, default)
-            except Exception, e:
+            except Exception as e:
                 if e.__class__ is not expected:
                     raise
             else:
@@ -1245,7 +1245,7 @@ log_name = %(yarr)s'''
             exc = None
             try:
                 fallocate(0, 1, 0, ctypes.c_uint64(0))
-            except OSError, err:
+            except OSError as err:
                 exc = err
             self.assertEquals(str(exc), 'FALLOCATE_RESERVE fail 1024 <= 1024')
             # Want 1024 reserved, have 512 * 2 free, so fails
@@ -1255,7 +1255,7 @@ log_name = %(yarr)s'''
             exc = None
             try:
                 fallocate(0, 1, 0, ctypes.c_uint64(0))
-            except OSError, err:
+            except OSError as err:
                 exc = err
             self.assertEquals(str(exc), 'FALLOCATE_RESERVE fail 1024 <= 1024')
             # Want 2048 reserved, have 1024 * 1 free, so fails
@@ -1265,7 +1265,7 @@ log_name = %(yarr)s'''
             exc = None
             try:
                 fallocate(0, 1, 0, ctypes.c_uint64(0))
-            except OSError, err:
+            except OSError as err:
                 exc = err
             self.assertEquals(str(exc), 'FALLOCATE_RESERVE fail 1024 <= 2048')
             # Want 2048 reserved, have 512 * 2 free, so fails
@@ -1275,7 +1275,7 @@ log_name = %(yarr)s'''
             exc = None
             try:
                 fallocate(0, 1, 0, ctypes.c_uint64(0))
-            except OSError, err:
+            except OSError as err:
                 exc = err
             self.assertEquals(str(exc), 'FALLOCATE_RESERVE fail 1024 <= 2048')
             # Want 1023 reserved, have 1024 * 1 free, but file size is 1, so
@@ -1286,7 +1286,7 @@ log_name = %(yarr)s'''
             exc = None
             try:
                 fallocate(0, 1, 0, ctypes.c_uint64(1))
-            except OSError, err:
+            except OSError as err:
                 exc = err
             self.assertEquals(str(exc), 'FALLOCATE_RESERVE fail 1023 <= 1023')
             # Want 1022 reserved, have 1024 * 1 free, and file size is 1, so
@@ -1309,7 +1309,7 @@ log_name = %(yarr)s'''
             exc = None
             try:
                 fallocate(0, 1, 0, ctypes.c_uint64(0))
-            except OSError, err:
+            except OSError as err:
                 exc = err
             self.assertEquals(str(exc), 'FALLOCATE_RESERVE fail 1024 <= 1024')
         finally:
@@ -2038,7 +2038,7 @@ class TestStatsdLoggingDelegation(unittest.TestCase):
                 if payload and 'STOP' in payload:
                     return 42
                 self.queue.put(payload)
-            except Exception, e:
+            except Exception as e:
                 sys.stderr.write('statsd_reader thread: %r' % (e,))
                 break
 
diff --git a/test/unit/container/test_server.py b/test/unit/container/test_server.py
index 7b31096a84..dddff8f6f8 100644
--- a/test/unit/container/test_server.py
+++ b/test/unit/container/test_server.py
@@ -458,7 +458,7 @@ class TestContainerController(unittest.TestCase):
                         line = inc.readline()
                     self.assertEquals(headers['x-put-timestamp'],
                                       expected_timestamp)
-            except BaseException, err:
+            except BaseException as err:
                 return err
             return None
 
@@ -512,7 +512,7 @@ class TestContainerController(unittest.TestCase):
         try:
             with Timeout(3):
                 resp = req.get_response(self.controller)
-        except BaseException, err:
+        except BaseException as err:
             got_exc = True
         finally:
             err = event.wait()
@@ -679,7 +679,7 @@ class TestContainerController(unittest.TestCase):
                         line = inc.readline()
                     self.assertEquals(headers['x-delete-timestamp'],
                                       expected_timestamp)
-            except BaseException, err:
+            except BaseException as err:
                 return err
             return None
 
@@ -742,7 +742,7 @@ class TestContainerController(unittest.TestCase):
         try:
             with Timeout(3):
                 resp = req.get_response(self.controller)
-        except BaseException, err:
+        except BaseException as err:
             got_exc = True
         finally:
             err = event.wait()
diff --git a/test/unit/container/test_sync.py b/test/unit/container/test_sync.py
index 557e4e228a..163f4e8172 100644
--- a/test/unit/container/test_sync.py
+++ b/test/unit/container/test_sync.py
@@ -142,7 +142,7 @@ class TestContainerSync(unittest.TestCase):
             cs = sync.ContainerSync({}, container_ring=FakeRing(),
                                     object_ring=FakeRing())
             cs.run_forever()
-        except Exception, err:
+        except Exception as err:
             if str(err) != 'we are now done':
                 raise
         finally:
@@ -201,7 +201,7 @@ class TestContainerSync(unittest.TestCase):
             self.assertEquals(audit_location_generator_calls, [1])
             self.assertEquals(cs.reported, 3602)
             cs.run_once()
-        except Exception, err:
+        except Exception as err:
             if str(err) != 'we are now done':
                 raise
         finally:
diff --git a/test/unit/container/test_updater.py b/test/unit/container/test_updater.py
index bb7ca1c870..a7da07b757 100644
--- a/test/unit/container/test_updater.py
+++ b/test/unit/container/test_updater.py
@@ -129,7 +129,7 @@ class TestContainerUpdater(unittest.TestCase):
                     self.assert_('x-delete-timestamp' in headers)
                     self.assert_('x-object-count' in headers)
                     self.assert_('x-bytes-used' in headers)
-            except BaseException, err:
+            except BaseException as err:
                 import traceback
                 traceback.print_exc()
                 return err
@@ -185,7 +185,7 @@ class TestContainerUpdater(unittest.TestCase):
                     out.write('HTTP/1.1 201 OK\r\nContent-Length: 0\r\n\r\n')
                     out.flush()
                     inc.read()
-            except BaseException, err:
+            except BaseException as err:
                 import traceback
                 traceback.print_exc()
                 return err
diff --git a/test/unit/obj/test_expirer.py b/test/unit/obj/test_expirer.py
index 118b7e58e1..f406e61bde 100644
--- a/test/unit/obj/test_expirer.py
+++ b/test/unit/obj/test_expirer.py
@@ -577,7 +577,7 @@ class TestObjectExpirer(TestCase):
             expirer.sleep = not_sleep
             x.run_once = raise_system_exit
             x.run_forever()
-        except SystemExit, err:
+        except SystemExit as err:
             pass
         finally:
             expirer.random = orig_random
@@ -601,7 +601,7 @@ class TestObjectExpirer(TestCase):
             expirer.sleep = not_sleep
             x.run_once = raise_exceptions
             x.run_forever()
-        except SystemExit, err:
+        except SystemExit as err:
             pass
         finally:
             expirer.sleep = orig_sleep
@@ -680,7 +680,7 @@ class TestObjectExpirer(TestCase):
         exc = None
         try:
             x.delete_actual_object('/path/to/object', '1234')
-        except Exception, err:
+        except Exception as err:
             exc = err
         finally:
             pass
diff --git a/test/unit/obj/test_updater.py b/test/unit/obj/test_updater.py
index 15b307ea55..ebfac25bbb 100644
--- a/test/unit/obj/test_updater.py
+++ b/test/unit/obj/test_updater.py
@@ -175,7 +175,7 @@ class TestObjectUpdater(unittest.TestCase):
                             line.split(':')[1].strip()
                         line = inc.readline()
                     self.assert_('x-container-timestamp' in headers)
-            except BaseException, err:
+            except BaseException as err:
                 return err
             return None
 
@@ -192,7 +192,7 @@ class TestObjectUpdater(unittest.TestCase):
                     err = event.wait()
                     if err:
                         raise err
-            except BaseException, err:
+            except BaseException as err:
                 return err
             return None