Remove Python 2 leftovers.

Fixes: 1ca0323e7c29 ("Require Python 3 and remove support for Python 2.")
Reported at: https://bugzilla.redhat.com/show_bug.cgi?id=1949875
Signed-off-by: Rosemarie O'Riorden <roriorde@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

17 files changed, 35 insertions, 64 deletions

diff --git a/ofproto/ipfix-gen-entities b/ofproto/ipfix-gen-entities
index 59bddf253..bd9189132 100755
--- a/ofproto/ipfix-gen-entities
+++ b/ofproto/ipfix-gen-entities
@@ -7,8 +7,6 @@
 # notice and this notice are preserved.  This file is offered as-is,
 # without warranty of any kind.
 
-from __future__ import print_function
-
 import getopt
 import re
 import sys
diff --git a/ovsdb/ovsdb-idlc.in b/ovsdb/ovsdb-idlc.in
index 5914e0878..61cded16d 100755
--- a/ovsdb/ovsdb-idlc.in
+++ b/ovsdb/ovsdb-idlc.in
@@ -1,6 +1,5 @@
 #! @PYTHON3@
 
-from __future__ import print_function
 import getopt
 import os
 import re
diff --git a/python/ovs/compat/sortedcontainers/sortedlist.py b/python/ovs/compat/sortedcontainers/sortedlist.py
index 8aec6bbac..ba5556692 100644
--- a/python/ovs/compat/sortedcontainers/sortedlist.py
+++ b/python/ovs/compat/sortedcontainers/sortedlist.py
@@ -3,8 +3,6 @@
 """
 # pylint: disable=redefined-builtin, ungrouped-imports
 
-from __future__ import print_function
-
 from bisect import bisect_left, bisect_right, insort
 from collections import Sequence, MutableSequence
 from functools import wraps
diff --git a/python/ovstest/rpcserver.py b/python/ovstest/rpcserver.py
index c4aab7020..05b6b1be2 100644
--- a/python/ovstest/rpcserver.py
+++ b/python/ovstest/rpcserver.py
@@ -18,22 +18,14 @@ rpcserver is an XML RPC server that allows RPC client to initiate tests
 
 import sys
 
-import exceptions
-
 import xmlrpc.client
 
-import tcp
-
 from twisted.internet import reactor
 from twisted.internet.error import CannotListenError
 from twisted.web import server
 from twisted.web import xmlrpc
 
-import udp
-
-import util
-
-import vswitch
+from . import tcp, udp, util, vswitch
 
 
 class TestArena(xmlrpc.XMLRPC):
@@ -210,7 +202,7 @@ class TestArena(xmlrpc.XMLRPC):
             (_, port) = self.__get_handle_resources(handle)
             port.loseConnection()
             self.__delete_handle(handle)
-        except exceptions.KeyError:
+        except KeyError:
             return -1
         return 0
 
@@ -222,7 +214,7 @@ class TestArena(xmlrpc.XMLRPC):
             (_, connector) = self.__get_handle_resources(handle)
             connector.disconnect()
             self.__delete_handle(handle)
-        except exceptions.KeyError:
+        except KeyError:
             return -1
         return 0
 
diff --git a/python/ovstest/tcp.py b/python/ovstest/tcp.py
index c495717f2..098c6cba3 100644
--- a/python/ovstest/tcp.py
+++ b/python/ovstest/tcp.py
@@ -21,7 +21,7 @@ import time
 from twisted.internet import interfaces
 from twisted.internet.protocol import ClientFactory, Factory, Protocol
 
-from zope.interface import implements
+from zope.interface.declarations import implementer
 
 
 class TcpListenerConnection(Protocol):
@@ -55,8 +55,8 @@ class TcpListenerFactory(Factory):
         return str(self.stats)
 
 
+@implementer(interfaces.IPushProducer)
 class Producer(object):
-    implements(interfaces.IPushProducer)
     """
     This producer class generates infinite byte stream for a specified time
     duration
diff --git a/python/ovstest/tests.py b/python/ovstest/tests.py
index 6de3cc3af..f959f945e 100644
--- a/python/ovstest/tests.py
+++ b/python/ovstest/tests.py
@@ -10,8 +10,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import print_function
-
 import math
 import time
 
diff --git a/python/ovstest/util.py b/python/ovstest/util.py
index 72457158f..270d6a037 100644
--- a/python/ovstest/util.py
+++ b/python/ovstest/util.py
@@ -26,8 +26,6 @@ import socket
 import struct
 import subprocess
 
-import exceptions
-
 import xmlrpc.client
 
 
@@ -88,7 +86,7 @@ def start_process(args):
                              stderr=subprocess.PIPE)
         out, err = p.communicate()
         return (p.returncode, out, err)
-    except exceptions.OSError:
+    except OSError:
         return (-1, None, None)
 
 
diff --git a/python/ovstest/vswitch.py b/python/ovstest/vswitch.py
index 9d5b5cffd..45c9587ee 100644
--- a/python/ovstest/vswitch.py
+++ b/python/ovstest/vswitch.py
@@ -15,7 +15,7 @@
 """
 vswitch module allows its callers to interact with OVS DB.
 """
-import util
+from . import util
 
 
 def ovs_vsctl_add_bridge(bridge):
diff --git a/python/setup.py b/python/setup.py
index d385d8372..cfe01763f 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -10,8 +10,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import print_function
-
 import sys
 
 from distutils.command.build_ext import build_ext
@@ -82,8 +80,6 @@ setup_args = dict(
         'Topic :: Software Development :: Libraries :: Python Modules',
         'Topic :: System :: Networking',
         'License :: OSI Approved :: Apache Software License',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
diff --git a/tests/test-jsonrpc.py b/tests/test-jsonrpc.py
index 3eabcd78d..1df5afa22 100644
--- a/tests/test-jsonrpc.py
+++ b/tests/test-jsonrpc.py
@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import print_function
-
 import argparse
 import errno
 import os
diff --git a/tests/test-reconnect.py b/tests/test-reconnect.py
index f0ad9f979..cea48eb52 100644
--- a/tests/test-reconnect.py
+++ b/tests/test-reconnect.py
@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import print_function
-
 import errno
 import sys
 
diff --git a/utilities/checkpatch.py b/utilities/checkpatch.py
index bc6bfae15..ac14da29b 100755
--- a/utilities/checkpatch.py
+++ b/utilities/checkpatch.py
@@ -13,7 +13,6 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-from __future__ import print_function
 
 import email
 import getopt
diff --git a/utilities/gdb/ovs_gdb.py b/utilities/gdb/ovs_gdb.py
index 1111f3100..0b2ecb81b 100644
--- a/utilities/gdb/ovs_gdb.py
+++ b/utilities/gdb/ovs_gdb.py
@@ -55,7 +55,6 @@
 #    ...
 #    ...
 #
-from __future__ import print_function
 import gdb
 import sys
 import uuid
diff --git a/utilities/ovs-l3ping.in b/utilities/ovs-l3ping.in
index 92d32acb3..1ece06457 100644
--- a/utilities/ovs-l3ping.in
+++ b/utilities/ovs-l3ping.in
@@ -19,7 +19,7 @@ achieved by tunneling the control connection inside the tunnel itself.
 """
 
 import socket
-import xmlrpclib
+import xmlrpc.client
 
 import ovstest.args as args
 import ovstest.tests as tests
@@ -64,13 +64,13 @@ if __name__ == '__main__':
             ps = get_packet_sizes(me, he, args.client[0])
             tests.do_direct_tests(me, he, bandwidth, interval, ps)
     except KeyboardInterrupt:
-        print "Terminating"
-    except xmlrpclib.Fault:
-        print "Couldn't contact peer"
+        print("Terminating")
+    except xmlrpc.client.Fault:
+        print("Couldn't contact peer")
     except socket.error:
-        print "Couldn't contact peer"
-    except xmlrpclib.ProtocolError:
-        print "XMLRPC control channel was abruptly terminated"
+        print("Couldn't contact peer")
+    except xmlrpc.client.ProtocolError:
+        print("XMLRPC control channel was abruptly terminated")
     finally:
         if local_server is not None:
             local_server.terminate()
diff --git a/utilities/ovs-parse-backtrace.in b/utilities/ovs-parse-backtrace.in
index d5506769a..f44f05cd1 100755
--- a/utilities/ovs-parse-backtrace.in
+++ b/utilities/ovs-parse-backtrace.in
@@ -70,7 +70,7 @@ result.  Expected usage is for ovs-appctl backtrace to be piped in.""")
         if os.path.exists(debug):
             binary = debug
 
-    print "Binary: %s\n" % binary
+    print("Binary: %s\n" % binary)
 
     stdin = sys.stdin.read()
 
@@ -88,15 +88,15 @@ result.  Expected usage is for ovs-appctl backtrace to be piped in.""")
     for lines, count in traces:
         longest = max(len(l) for l in lines)
 
-        print "Backtrace Count: %d" % count
+        print("Backtrace Count: %d" % count)
         for line in lines:
             match = re.search(r'\[(0x.*)]', line)
             if match:
-                print "%s %s" % (line.ljust(longest),
-                                 addr2line(binary, match.group(1)))
+                print("%s %s" % (line.ljust(longest),
+                                 addr2line(binary, match.group(1))))
             else:
-                print line
-        print
+                print(line)
+        print()
 
 
 if __name__ == "__main__":
diff --git a/utilities/ovs-pcap.in b/utilities/ovs-pcap.in
index dddbee4df..6b5f63399 100755
--- a/utilities/ovs-pcap.in
+++ b/utilities/ovs-pcap.in
@@ -14,8 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import print_function
-
 import binascii
 import getopt
 import struct
@@ -79,7 +77,7 @@ if __name__ == "__main__":
         try:
             options, args = getopt.gnu_getopt(sys.argv[1:], 'hV',
                                               ['help', 'version'])
-        except getopt.GetoptException as geo:
+        except getopt.GetoptError as geo:
             sys.stderr.write("%s: %s\n" % (argv0, geo.msg))
             sys.exit(1)
 
diff --git a/utilities/ovs-vlan-test.in b/utilities/ovs-vlan-test.in
index 154573a9b..de3ae1686 100755
--- a/utilities/ovs-vlan-test.in
+++ b/utilities/ovs-vlan-test.in
@@ -14,9 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import BaseHTTPServer
 import getopt
-import httplib
+import http.client
+import http.server
 import os
 import threading
 import time
@@ -84,7 +84,7 @@ class UDPReceiver:
 
         try:
             sock.bind((self.vlan_ip, self.vlan_port))
-        except socket.error, e:
+        except socket.error as e:
             print_safe('Failed to bind to %s:%d with error: %s'
                     % (self.vlan_ip, self.vlan_port, e))
             os._exit(1) #sys.exit only exits the current thread.
@@ -95,7 +95,7 @@ class UDPReceiver:
                 data, _ = sock.recvfrom(4096)
             except socket.timeout:
                 continue
-            except socket.error, e:
+            except socket.error as e:
                 print_safe('Failed to receive from %s:%d with error: %s'
                     % (self.vlan_ip, self.vlan_port, e))
                 os._exit(1)
@@ -180,7 +180,7 @@ class VlanServer:
             for _ in range(send_time * 2):
                 try:
                     send_packet(test_id, size, ip, port)
-                except socket.error, e:
+                except socket.error as e:
                     self.set_result(test_id, 'Failure: ' + str(e))
                     return
                 time.sleep(.5)
@@ -194,15 +194,15 @@ class VlanServer:
     def run(self):
         self.udp_recv.start()
         try:
-            BaseHTTPServer.HTTPServer((self.server_ip, self.server_port),
+            http.server.HTTPServer((self.server_ip, self.server_port),
                     VlanServerHandler).serve_forever()
-        except socket.error, e:
+        except socket.error as e:
             print_safe('Failed to start control server: %s' % e)
             self.udp_recv.stop()
 
         return 1
 
-class VlanServerHandler(BaseHTTPServer.BaseHTTPRequestHandler):
+class VlanServerHandler(http.server.BaseHTTPRequestHandler):
     def do_GET(self):
 
         #Guarantee three arguments.
@@ -244,7 +244,7 @@ class VlanClient:
         self.udp_recv       = UDPReceiver(vlan_ip, vlan_port)
 
     def request(self, resource):
-        conn = httplib.HTTPConnection(self.server_ip_port)
+        conn = http.client.HTTPConnection(self.server_ip_port)
         conn.request('GET', resource)
         return conn
 
@@ -256,7 +256,7 @@ class VlanClient:
         try:
             conn = self.request('/start/recv')
             data = conn.getresponse().read()
-        except (socket.error, httplib.HTTPException), e:
+        except (socket.error, http.client.HTTPException) as e:
             error_msg(e)
             return False
 
@@ -277,7 +277,7 @@ class VlanClient:
                 send_packet(test_id, size, ip, port)
                 resp = self.request('/result/%d' % test_id).getresponse()
                 data = resp.read()
-            except (socket.error, httplib.HTTPException), e:
+            except (socket.error, http.client.HTTPException) as e:
                 error_msg(e)
                 return False
 
@@ -302,7 +302,7 @@ class VlanClient:
         try:
             conn    = self.request(resource)
             test_id = conn.getresponse().read()
-        except (socket.error, httplib.HTTPException), e:
+        except (socket.error, http.client.HTTPException) as e:
             error_msg(e)
             return False
 
@@ -335,7 +335,7 @@ class VlanClient:
         try:
             resp = self.request('/ping').getresponse()
             data = resp.read()
-        except (socket.error, httplib.HTTPException), e:
+        except (socket.error, http.client.HTTPException) as e:
             error_msg(e)
             return False
 
@@ -383,7 +383,7 @@ def main():
     try:
         options, args = getopt.gnu_getopt(sys.argv[1:], 'hVs',
                                           ['help', 'version', 'server'])
-    except getopt.GetoptError, geo:
+    except getopt.GetoptError as geo:
         print_safe('%s: %s\n' % (sys.argv[0], geo.msg))
         return 1