diff --git a/RO-plugin/osm_ro_plugin/openflow_conn.py b/RO-plugin/osm_ro_plugin/openflow_conn.py
index 17351b0..f1869e8 100644
--- a/RO-plugin/osm_ro_plugin/openflow_conn.py
+++ b/RO-plugin/osm_ro_plugin/openflow_conn.py
@@ -15,11 +15,14 @@
 # under the License.
 #
 ##
-import logging
+
 from http import HTTPStatus
-from osm_ro_plugin.sdnconn import SdnConnectorBase, SdnConnectorError
+import logging
 from uuid import uuid4
 
+from osm_ro_plugin.sdnconn import SdnConnectorBase, SdnConnectorError
+
+
 """
 Implement an Abstract class 'OpenflowConn' and an engine 'SdnConnectorOpenFlow' used for base class for SDN plugings
 that implements a pro-active opeflow rules.
diff --git a/RO-plugin/osm_ro_plugin/sdn_dummy.py b/RO-plugin/osm_ro_plugin/sdn_dummy.py
index fb7c552..0318156 100644
--- a/RO-plugin/osm_ro_plugin/sdn_dummy.py
+++ b/RO-plugin/osm_ro_plugin/sdn_dummy.py
@@ -20,10 +20,12 @@
 This WIM does nothing and allows using it for testing and when no WIM is needed
 """
 
+from http import HTTPStatus
 import logging
 from uuid import uuid4
+
 from osm_ro_plugin.sdnconn import SdnConnectorBase, SdnConnectorError
-from http import HTTPStatus
+
 
 __author__ = "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>"
 
diff --git a/RO-plugin/osm_ro_plugin/sdnconn.py b/RO-plugin/osm_ro_plugin/sdnconn.py
index a1849c9..467d05d 100644
--- a/RO-plugin/osm_ro_plugin/sdnconn.py
+++ b/RO-plugin/osm_ro_plugin/sdnconn.py
@@ -37,8 +37,8 @@
 It receives information from ports to be connected .
 """
 
-import logging
 from http import HTTPStatus
+import logging
 
 
 class SdnConnectorError(Exception):
diff --git a/RO-plugin/osm_ro_plugin/vim_dummy.py b/RO-plugin/osm_ro_plugin/vim_dummy.py
index fe3a811..f003ba9 100644
--- a/RO-plugin/osm_ro_plugin/vim_dummy.py
+++ b/RO-plugin/osm_ro_plugin/vim_dummy.py
@@ -20,12 +20,14 @@
 Implements a Dummy vim plugin.
 """
 
-import yaml
-from osm_ro_plugin import vimconn
-from uuid import uuid4
 from copy import deepcopy
 import logging
 from random import randrange
+from uuid import uuid4
+
+from osm_ro_plugin import vimconn
+import yaml
+
 
 __author__ = "Alfonso Tierno"
 __date__ = "2020-04-20"
diff --git a/RO-plugin/osm_ro_plugin/vimconn.py b/RO-plugin/osm_ro_plugin/vimconn.py
index cc087f0..b4e936c 100644
--- a/RO-plugin/osm_ro_plugin/vimconn.py
+++ b/RO-plugin/osm_ro_plugin/vimconn.py
@@ -26,17 +26,18 @@
  with the definition of the method to be implemented.
 """
 
-import logging
-import paramiko
-import socket
-from io import StringIO
-import yaml
-import sys
 from email.mime.multipart import MIMEMultipart
 from email.mime.text import MIMEText
 from http import HTTPStatus
+from io import StringIO
+import logging
+import socket
+import sys
 import warnings
 
+import paramiko
+import yaml
+
 __author__ = "Alfonso Tierno, Igor D.C."
 __date__ = "$14-aug-2017 23:59:59$"