diff --git a/ihm.py b/ihm.py
index 1331b0d01be4087059507507d8e9e36ea7220c78..ba0a1c70bf993f0e2aa17b33eb9e9c96bc91ab30 100644
--- a/ihm.py
+++ b/ihm.py
@@ -1,18 +1,17 @@
+import pathlib
+import platform  # For getting the operating system name
+import subprocess  # For executing a shell command
 import sys
-from subprocess import Popen
 from os import path
+from subprocess import Popen
 from time import sleep
 
-import platform  # For getting the operating system name
-import subprocess  # For executing a shell command
-
-import pathlib
-
 from tool.confi_reader import read_ssh
 from tool.mqtt_client import MqttClient
 from tool.ssh_client import SSHClient, Cmd
 from tool.update import VersionManager
 
+
 class Ihm(MqttClient, SSHClient):
 
     def __init__(self):
@@ -111,9 +110,9 @@ class Ihm(MqttClient, SSHClient):
                     p1 = Popen([sys.executable, 'scheduler.py', cmd])
                     sleep(1)
                     # start subprocess amas
-                    p2 = Popen([sys.executable, experiment_folder+'/amas.py'])
+                    p2 = Popen([sys.executable, experiment_folder + '/amas.py'])
                     # start subprocess env
-                    p3 = Popen([sys.executable, experiment_folder+'/env.py'])
+                    p3 = Popen([sys.executable, experiment_folder + '/env.py'])
 
             if cmd.lower() == "pause":
                 self.client.publish("ihm/pause")
@@ -126,8 +125,7 @@ class Ihm(MqttClient, SSHClient):
 
             if cmd.lower() == "ping":
 
-                for client in read_ssh(str(pathlib.Path(__file__).parent.resolve())+"/tool/config.json") :
-
+                for client in read_ssh(str(pathlib.Path(__file__).parent.resolve()) + "/tool/config.json"):
                     param = '-n' if platform.system().lower() == 'windows' else '-c'
                     command = ['ping', param, '1', client.hostname]
 
@@ -138,12 +136,10 @@ class Ihm(MqttClient, SSHClient):
             if cmd.lower() == "mode":
                 self.client.publish("ihm/mode")
 
-
         self.client.publish("ihm/step")
         sleep(2)
 
 
-
 if __name__ == '__main__':
     a = Ihm()
     a.run()
diff --git a/tool/confi_reader.py b/tool/confi_reader.py
index da0b9046f354f6536799c3827bb5d15072bd9a8c..66ae9e92f7234850d8292637f0d64b456ecd5e7f 100644
--- a/tool/confi_reader.py
+++ b/tool/confi_reader.py
@@ -1,7 +1,6 @@
 import json
-
-import sys
 import pathlib
+import sys
 
 sys.path.insert(0, str(pathlib.Path(__file__).parent.parent))
 from tool.remote_client import RemoteClient
diff --git a/tool/mqtt_client.py b/tool/mqtt_client.py
index 0384587d96240ee1d895eae9361fde7353452249..b5901b904f2f1a89b99fdb8b07f2af400465edaf 100644
--- a/tool/mqtt_client.py
+++ b/tool/mqtt_client.py
@@ -1,5 +1,5 @@
-import sys
 import pathlib
+import sys
 
 sys.path.insert(0, str(pathlib.Path(__file__).parent.parent))
 
@@ -19,3 +19,6 @@ class MqttClient:
     def subscribe(self, topic, fun):
         self.client.subscribe(topic)
         self.client.message_callback_add(topic, fun)
+
+    def publish(self, topic, message):
+        self.client.publish(topic, message)
diff --git a/tool/schedulable.py b/tool/schedulable.py
index 5ff162b1a1111f3dbe4b6a51d64408e344fd3b4e..dac17347fac079e32dfd0dc5bb3ef19b97a55151 100644
--- a/tool/schedulable.py
+++ b/tool/schedulable.py
@@ -1,10 +1,9 @@
 """
 Tool class that implement basic interaction that help to finish processes
 """
-from time import sleep
-
-import sys
 import pathlib
+import sys
+from time import sleep
 
 sys.path.insert(0, str(pathlib.Path(__file__).parent.parent))
 
diff --git a/tool/ssh_client.py b/tool/ssh_client.py
index 29f45cfe365add3c77928c088e33bdd8fb0d4cf7..1fed649833766fb6b8677e61b7c6545209fac0d4 100644
--- a/tool/ssh_client.py
+++ b/tool/ssh_client.py
@@ -1,10 +1,8 @@
-import os
+import pathlib
+import sys
 
 from pexpect import pxssh
 
-import sys
-import pathlib
-
 sys.path.insert(0, str(pathlib.Path(__file__).parent.parent))
 from tool.confi_reader import read_ssh
 
@@ -20,7 +18,7 @@ class Cmd:
 class SSHClient:
 
     def __init__(self):
-        self.clients = read_ssh(str(pathlib.Path(__file__).parent.resolve())+"/config.json")
+        self.clients = read_ssh(str(pathlib.Path(__file__).parent.resolve()) + "/config.json")
 
     def run_cmd(self, client: int, cmd: list):
         try:
diff --git a/tool/update.py b/tool/update.py
index 03b7fde21659827dc95ad2b2b9a7eefa3ef2b680..f261e89d57da13234d307cdabad6a6c1401c25ee 100644
--- a/tool/update.py
+++ b/tool/update.py
@@ -1,8 +1,8 @@
-import paramiko
 import os
-
-import sys
 import pathlib
+import sys
+
+import paramiko
 
 sys.path.insert(0, str(pathlib.Path(__file__).parent.parent))
 from tool.confi_reader import read_ssh
@@ -11,7 +11,7 @@ from tool.confi_reader import read_ssh
 class VersionManager:
 
     def __init__(self):
-        self.clients = read_ssh(str(pathlib.Path(__file__).parent.resolve())+"/config.json")
+        self.clients = read_ssh(str(pathlib.Path(__file__).parent.resolve()) + "/config.json")
 
     def update(self):
         for client in self.clients: