[ovs-dev] python: Add double newline after fuction or class (E305).

diff --git a/python/ovs/db/types.py b/python/ovs/db/types.py
index 2d2ef8f..78d5fcd 100644
--- a/python/ovs/db/types.py
+++ b/python/ovs/db/types.py
@@ -56,6 +56,7 @@  class AtomicType(object):
     def default_atom(self):
         return ovs.db.data.Atom(self, self.default)
 
+
 REAL_PYTHON_TYPES = list(six.integer_types)
 REAL_PYTHON_TYPES.extend([float])
 REAL_PYTHON_TYPES = tuple(REAL_PYTHON_TYPES)
diff --git a/python/ovs/fatal_signal.py b/python/ovs/fatal_signal.py
index 73e4be6..a143e24 100644
--- a/python/ovs/fatal_signal.py
+++ b/python/ovs/fatal_signal.py
@@ -43,6 +43,7 @@  def fork():
             cancel()
 
     _hooks = []
+
 
 _added_hook = False
 _files = {}
diff --git a/python/ovs/stream.py b/python/ovs/stream.py
index 59578b1..b43e105 100644
--- a/python/ovs/stream.py
+++ b/python/ovs/stream.py
@@ -395,6 +395,8 @@  class UnixStream(Stream):
         connect_path = suffix
         return ovs.socket_util.make_unix_socket(socket.SOCK_STREAM,
                                                 True, None, connect_path)
+
+
 Stream.register_method("unix", UnixStream)
 
 
@@ -406,6 +408,8 @@  class TCPStream(Stream):
         if not error:
             sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
         return error, sock
+
+
 Stream.register_method("tcp", TCPStream)
 
 
diff --git a/python/ovs/unixctl/__init__.py b/python/ovs/unixctl/__init__.py
index 48b56d4..a2b13f9 100644
--- a/python/ovs/unixctl/__init__.py
+++ b/python/ovs/unixctl/__init__.py
@@ -86,4 +86,5 @@  def socket_name_from_target(target):
     else:
         return 0, "%s/%s.%d.ctl" % (ovs.dirs.RUNDIR, target, pid)
 
+
 command_register("help", "", 0, 0, _unixctl_help, None)
diff --git a/utilities/checkpatch.py b/utilities/checkpatch.py
index 5e6e83d..26eb5c3 100755
--- a/utilities/checkpatch.py
+++ b/utilities/checkpatch.py
@@ -298,6 +298,7 @@  def ovs_checkpatch_file(filename):
         print("Warnings: %d, Errors: %d" % (__warnings, __errors))
     return result
 
+
 if __name__ == '__main__':
     try:
         optlist, args = getopt.getopt(sys.argv[1:], 'bhlstf',
diff --git a/utilities/ovs-dev.py b/utilities/ovs-dev.py
index 9188d73..6a626a1 100755
--- a/utilities/ovs-dev.py
+++ b/utilities/ovs-dev.py
@@ -149,12 +149,16 @@  def conf():
     mf.write("\ncheck:\n")
     mf.write(make_str % BUILD_GCC)
     mf.close()
+
+
 commands.append(conf)
 
 
 def make(args=""):
     make = "make -s -j 8 " + args
     _sh(make)
+
+
 commands.append(make)
 
 
@@ -172,6 +176,8 @@  def check():
                 flags += "-k %s " % arg
     ENV["TESTSUITEFLAGS"] = flags
     make("check")
+
+
 commands.append(check)
 
 
@@ -190,6 +196,8 @@  def tag():
         _sh('cscope', '-R', '-b')
     except:
         pass
+
+
 commands.append(tag)
 
 
@@ -200,6 +208,8 @@  def kill():
             _sh("ovs-appctl", "-t", proc, "exit", check=False)
             time.sleep(.1)
         _sh("killall", "-q", "-2", proc, check=False)
+
+
 commands.append(kill)
 
 
@@ -210,6 +220,8 @@  def reset():
         shutil.rmtree(RUNDIR)
     for dp in _sh("ovs-dpctl dump-dps", capture=True):
         _sh("ovs-dpctl", "del-dp", dp.decode().strip())
+
+
 commands.append(reset)
 
 
@@ -285,6 +297,8 @@  def run():
     else:
         opts = opts + ["-vconsole:off", "--detach", "--enable-dummy"]
     _sh(*(cmd + opts))
+
+
 commands.append(run)
 
 
@@ -313,11 +327,15 @@  def modinst():
     _sh("dmesg | grep openvswitch | tail -1")
     _sh("find /lib/modules/%s/ -iname vport-*.ko -exec insmod '{}' \;"
         % uname())
+
+
 commands.append(modinst)
 
 
 def env():
     print("export PATH=" + ENV["PATH"])
+
+
 commands.append(env)
 
 
@@ -373,6 +391,8 @@  Note:
     will always run as the root user, by rerun the commands with "sudo".
 """ % {"ovs": OVS_SRC, "v": sys.argv[0], "run": RUNDIR})
     sys.exit(0)
+
+
 commands.append(doc)