diff --git a/osm_ee/util/util_ansible.py b/osm_ee/util/util_ansible.py
index 8f27875..37ed18b 100644
--- a/osm_ee/util/util_ansible.py
+++ b/osm_ee/util/util_ansible.py
@@ -29,12 +29,15 @@
 logger = logging.getLogger("osm_ee.util_ansible")
 
 
-async def execute_playbook(playbook_name: str, inventory: str, extra_vars: dict,
-                           ) -> (int, str):
+async def execute_playbook(
+    playbook_name: str,
+    inventory: str,
+    extra_vars: dict,
+) -> (int, str):
 
-    command = 'ansible-playbook --inventory={} --extra-vars {} {}'.format(quote(inventory),
-                                                                          quote(json.dumps(extra_vars)),
-                                                                          quote(playbook_name))
+    command = "ansible-playbook --inventory={} --extra-vars {} {}".format(
+        quote(inventory), quote(json.dumps(extra_vars)), quote(playbook_name)
+    )
 
     logger.debug("Command to be executed: {}".format(command))
 
diff --git a/osm_ee/util/util_ee.py b/osm_ee/util/util_ee.py
index 1d0a232..915e97f 100644
--- a/osm_ee/util/util_ee.py
+++ b/osm_ee/util/util_ee.py
@@ -27,19 +27,16 @@
 logger = logging.getLogger("osm_ee.util")
 
 
-async def local_async_exec(command: str
-                           ) -> (int, str, str):
+async def local_async_exec(command: str) -> (int, str, str):
     """
-        Executed a local command using asyncio.
-        TODO - do not know yet if return error code, and stdout and strerr or just one of them
+    Executed a local command using asyncio.
+    TODO - do not know yet if return error code, and stdout and strerr or just one of them
     """
     scommand = split(command)
 
     logger.debug("Execute local command: {}".format(command))
     process = await asyncio.create_subprocess_exec(
-        *scommand,
-        stdout=asyncio.subprocess.PIPE,
-        stderr=asyncio.subprocess.PIPE
+        *scommand, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE
     )
 
     # wait for command terminate
diff --git a/osm_ee/util/util_grpc.py b/osm_ee/util/util_grpc.py
index 5fe8fc5..2dc68fa 100644
--- a/osm_ee/util/util_grpc.py
+++ b/osm_ee/util/util_grpc.py
@@ -14,17 +14,19 @@
 def create_secure_context() -> ssl.SSLContext:
     # retrieve certificates from secrets
     if not _retrieve_certs():
-        logger.warning("TLS Certificates not found, starting gRPC server in unsecure mode")
+        logger.warning(
+            "TLS Certificates not found, starting gRPC server in unsecure mode"
+        )
         return None
     # create SSL context
     ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
     ctx.verify_mode = ssl.CERT_REQUIRED
     ctx.load_cert_chain(SERVER_CERT_FILE, SERVER_KEY_FILE)
     ctx.load_verify_locations(CLIENT_CA_FILE)
-    ctx.set_ciphers('ECDHE+AESGCM:ECDHE+CHACHA20:DHE+AESGCM:DHE+CHACHA20')
-    ctx.set_alpn_protocols(['h2'])
+    ctx.set_ciphers("ECDHE+AESGCM:ECDHE+CHACHA20:DHE+AESGCM:DHE+CHACHA20")
+    ctx.set_alpn_protocols(["h2"])
     try:
-        ctx.set_npn_protocols(['h2'])
+        ctx.set_npn_protocols(["h2"])
     except NotImplementedError:
         pass
     return ctx
diff --git a/osm_ee/util/util_kubernetes.py b/osm_ee/util/util_kubernetes.py
index a02334e..96ad587 100644
--- a/osm_ee/util/util_kubernetes.py
+++ b/osm_ee/util/util_kubernetes.py
@@ -10,7 +10,9 @@
         # we are not running in kubernetes
         return {}
     # Read the namespace from the service account
-    current_namespace = open("/var/run/secrets/kubernetes.io/serviceaccount/namespace").read()
+    current_namespace = open(
+        "/var/run/secrets/kubernetes.io/serviceaccount/namespace"
+    ).read()
 
     v1 = client.CoreV1Api()
     try: