diff --git a/fail2ban/server/database.py b/fail2ban/server/database.py
index 63f4e1c9..e5d60661 100644
--- a/fail2ban/server/database.py
+++ b/fail2ban/server/database.py
@@ -46,6 +46,7 @@ if sys.version_info >= (3,):
 			logSys.error('json dumps failed: %s', e)
 			x = '{}'
 		return x
+
 	def _json_loads_safe(x):
 		try:
 			x = json.loads(x.decode(
@@ -64,6 +65,7 @@ else:
 			return x.encode(locale.getpreferredencoding())
 		else:
 			return x
+
 	def _json_dumps_safe(x):
 		try:
 			x = json.dumps(_normalize(x), ensure_ascii=False).decode(
@@ -72,6 +74,7 @@ else:
 			logSys.error('json dumps failed: %s', e)
 			x = '{}'
 		return x
+
 	def _json_loads_safe(x):
 		try:
 			x = _normalize(json.loads(x.decode(
@@ -156,6 +159,7 @@ class Fail2BanDb(object):
 			"CREATE INDEX bans_jail_ip ON bans(jail, ip);" \
 			"CREATE INDEX bans_ip ON bans(ip);" \
 
+
 	def __init__(self, filename, purgeAge=24*60*60):
 		try:
 			self._lock = RLock()
diff --git a/fail2ban/server/failregex.py b/fail2ban/server/failregex.py
index 034d6877..a7c3efdd 100644
--- a/fail2ban/server/failregex.py
+++ b/fail2ban/server/failregex.py
@@ -57,6 +57,7 @@ class Regex:
 		except sre_constants.error:
 			raise RegexException("Unable to compile regular expression '%s'" %
 								 regex)
+
 	def __str__(self):
 		return "%s(%r)" % (self.__class__.__name__, self._regex)
 	##
diff --git a/fail2ban/server/jailthread.py b/fail2ban/server/jailthread.py
index e4186739..c44c16c1 100644
--- a/fail2ban/server/jailthread.py
+++ b/fail2ban/server/jailthread.py
@@ -59,6 +59,7 @@ class JailThread(Thread):
 		# excepthook workaround for threads, derived from:
 		# http://bugs.python.org/issue1230540#msg91244
 		run = self.run
+
 		def run_with_except_hook(*args, **kwargs):
 			try:
 				run(*args, **kwargs)
diff --git a/fail2ban/tests/filtertestcase.py b/fail2ban/tests/filtertestcase.py
index 75f91584..0022dac9 100644
--- a/fail2ban/tests/filtertestcase.py
+++ b/fail2ban/tests/filtertestcase.py
@@ -475,6 +475,7 @@ def get_monitor_failures_testcase(Filter_):
 
 	class MonitorFailures(unittest.TestCase):
 		count = 0
+
 		def setUp(self):
 			"""Call before every test case."""
 			setUpMyTime()
diff --git a/fail2ban/tests/servertestcase.py b/fail2ban/tests/servertestcase.py
index 28360e11..aa2979f8 100644
--- a/fail2ban/tests/servertestcase.py
+++ b/fail2ban/tests/servertestcase.py
@@ -50,6 +50,7 @@ TEST_FILES_DIR = os.path.join(os.path.dirname(__file__), "files")
 class TestServer(Server):
 	def setLogLevel(self, *args, **kwargs):
 		pass
+
 	def setLogTarget(self, *args, **kwargs):
 		pass
 
diff --git a/fail2ban/tests/utils.py b/fail2ban/tests/utils.py
index ec3be64c..f94451b4 100644
--- a/fail2ban/tests/utils.py
+++ b/fail2ban/tests/utils.py
@@ -86,6 +86,7 @@ def gatherTests(regexps=None, no_network=False):
 	else: # pragma: no cover
 		class FilteredTestSuite(unittest.TestSuite):
 			_regexps = [re.compile(r) for r in regexps]
+
 			def addTest(self, suite):
 				suite_str = str(suite)
 				for r in self._regexps: