Adapt to flake8-import-order

https://review.openstack.org/#/c/432906/
flake8-import-order adds 3 new flake8 warnings:
I100: Your import statements are in the wrong order.
I101: The names in your from import are in the wrong order.
I201: Missing newline between sections or imports.

Signed-off-by: Ben Pfaff <blp@ovn.org>

python/ovs/db/data.py

@@ -16,17 +16,16 @@ import functools
 import re
 import uuid
 
-import six
-
-import ovs.poller
-import ovs.socket_util
+import ovs.db.parser
+import ovs.db.types
 import ovs.json
 import ovs.jsonrpc
 import ovs.ovsuuid
-
-import ovs.db.parser
+import ovs.poller
+import ovs.socket_util
 from ovs.db import error
-import ovs.db.types
+
+import six
 
 
 class ConstraintViolation(error.Error):

python/ovs/db/idl.py

@@ -15,16 +15,16 @@
 import functools
 import uuid
 
-import six
-
-import ovs.jsonrpc
 import ovs.db.data as data
 import ovs.db.parser
 import ovs.db.schema
-from ovs.db import error
+import ovs.jsonrpc
 import ovs.ovsuuid
 import ovs.poller
 import ovs.vlog
+from ovs.db import error
+
+import six
 
 vlog = ovs.vlog.Vlog("idl")
 

python/ovs/db/parser.py

@@ -14,10 +14,10 @@
 
 import re
 
-import six
-
 from ovs.db import error
 
+import six
+
 
 class Parser(object):
     def __init__(self, json, name):

python/ovs/db/schema.py

@@ -15,11 +15,11 @@
 import re
 import sys
 
-import six
-
-from ovs.db import error
 import ovs.db.parser
 import ovs.db.types
+from ovs.db import error
+
+import six
 
 
 def _check_id(name, json):

python/ovs/db/types.py

@@ -15,12 +15,12 @@
 import sys
 import uuid
 
-import six
-
-from ovs.db import error
-import ovs.db.parser
 import ovs.db.data
+import ovs.db.parser
 import ovs.ovsuuid
+from ovs.db import error
+
+import six
 
 
 class AtomicType(object):

python/ovs/fcntl_win.py

@@ -13,11 +13,15 @@
 # limitations under the License.
 
 import errno
-import win32con
-import win32file
-import pywintypes
+
 import msvcrt
 
+import pywintypes
+
+import win32con
+
+import win32file
+
 LOCK_EX = win32con.LOCKFILE_EXCLUSIVE_LOCK
 LOCK_SH = 0  # the default
 LOCK_NB = win32con.LOCKFILE_FAIL_IMMEDIATELY

python/ovs/json.py

@@ -13,6 +13,7 @@
 # limitations under the License.
 
 from __future__ import absolute_import
+
 import functools
 import json
 import re

python/ovs/jsonrpc.py

@@ -16,8 +16,6 @@ import errno
 import os
 import sys
 
-import six
-
 import ovs.json
 import ovs.poller
 import ovs.reconnect
@@ -26,6 +24,8 @@ import ovs.timeval
 import ovs.util
 import ovs.vlog
 
+import six
+
 EOF = ovs.util.EOF
 vlog = ovs.vlog.Vlog("jsonrpc")
 

python/ovs/ovsuuid.py

@@ -15,12 +15,12 @@
 import re
 import uuid
 
+import ovs.db.parser
+from ovs.db import error
+
 import six
 from six.moves import range
 
-from ovs.db import error
-import ovs.db.parser
-
 uuidRE = re.compile("^xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx$"
                     .replace('x', '[0-9a-fA-F]'))
 

python/ovs/poller.py

@@ -13,13 +13,15 @@
 # limitations under the License.
 
 import errno
-import ovs.timeval
-import ovs.vlog
+import os
+
 import select
 import socket
-import os
 import sys
 
+import ovs.timeval
+import ovs.vlog
+
 if sys.platform == "win32":
     import ovs.winutils as winutils
 

python/ovs/reconnect.py

@@ -14,8 +14,8 @@
 
 import os
 
-import ovs.vlog
 import ovs.util
+import ovs.vlog
 
 # Values returned by Reconnect.run()
 CONNECT = 'connect'

python/ovs/socket_util.py

@@ -19,13 +19,13 @@ import random
 import socket
 import sys
 
-import six
-from six.moves import range
-
 import ovs.fatal_signal
 import ovs.poller
 import ovs.vlog
 
+import six
+from six.moves import range
+
 if sys.platform == 'win32':
     import ovs.winutils as winutils
     import win32file

python/ovs/stream.py

@@ -17,12 +17,12 @@ import os
 import socket
 import sys
 
-import six
-
 import ovs.poller
 import ovs.socket_util
 import ovs.vlog
 
+import six
+
 try:
     from OpenSSL import SSL
 except ImportError:

python/ovs/unixctl/__init__.py

@@ -12,11 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import six
 import sys
 
 import ovs.util
 
+import six
+
 commands = {}
 strtypes = six.string_types
 

python/ovs/unixctl/client.py

@@ -14,12 +14,11 @@
 
 import os
 
-import six
-
 import ovs.jsonrpc
 import ovs.stream
 import ovs.util
 
+import six
 
 vlog = ovs.vlog.Vlog("unixctl_client")
 strtypes = six.string_types

python/ovs/unixctl/server.py

@@ -17,9 +17,6 @@ import errno
 import os
 import sys
 
-import six
-from six.moves import range
-
 import ovs.dirs
 import ovs.jsonrpc
 import ovs.stream
@@ -28,6 +25,9 @@ import ovs.util
 import ovs.version
 import ovs.vlog
 
+import six
+from six.moves import range
+
 Message = ovs.jsonrpc.Message
 vlog = ovs.vlog.Vlog("unixctl_server")
 strtypes = six.string_types

python/ovs/vlog.py

@@ -22,13 +22,13 @@ import socket
 import sys
 import threading
 
-import six
-from six.moves import range
-
 import ovs.dirs
 import ovs.unixctl
 import ovs.util
 
+import six
+from six.moves import range
+
 DESTINATIONS = {"console": "info", "file": "info", "syslog": "info"}
 PATTERNS = {
     "console": "%D{%Y-%m-%dT%H:%M:%SZ}|%05N|%c%T|%p|%m",

python/ovs/winutils.py

@@ -12,19 +12,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import six
 import sys
 
+import six
+
 if sys.platform != 'win32':
     raise Exception("Intended to use only on Windows")
 else:
     import pywintypes
-    import winerror
-    import win32pipe
     import win32con
-    import win32security
-    import win32file
     import win32event
+    import win32file
+    import win32pipe
+    import win32security
+    import winerror
 
 
 def close_handle(handle, logger=None):

python/ovstest/rpcserver.py

@@ -18,18 +18,23 @@ rpcserver is an XML RPC server that allows RPC client to initiate tests
 
 from __future__ import print_function
 
-import exceptions
 import sys
 
+import exceptions
+
 import six.moves.xmlrpc_client
-from twisted.internet import reactor
-from twisted.internet.error import CannotListenError
-from twisted.web import xmlrpc
-from twisted.web import server
 
 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
 
 

python/ovstest/tcp.py

@@ -16,11 +16,13 @@
 tcp module contains listener and sender classes for TCP protocol
 """
 
-from twisted.internet.protocol import Factory, ClientFactory, Protocol
-from twisted.internet import interfaces
-from zope.interface import implements
 import time
 
+from twisted.internet import interfaces
+from twisted.internet.protocol import ClientFactory, Factory, Protocol
+
+from zope.interface import implements
+
 
 class TcpListenerConnection(Protocol):
     """

python/ovstest/util.py

@@ -16,18 +16,20 @@
 util module contains some helper function
 """
 import array
-import exceptions
 import fcntl
+
 import os
+import re
 import select
+import signal
 import socket
 import struct
-import signal
 import subprocess
-import re
 
-from six.moves import range
+import exceptions
+
 import six.moves.xmlrpc_client
+from six.moves import range
 
 
 def str_ip(ip_address):

python/setup.py

@@ -11,6 +11,7 @@
 # limitations under the License.
 
 from __future__ import print_function
+
 import sys
 
 from distutils.command.build_ext import build_ext