diff --git a/pychassisctl/chassis_control.py b/pychassisctl/chassis_control.py
index fbe0f72..b5528c8 100644
--- a/pychassisctl/chassis_control.py
+++ b/pychassisctl/chassis_control.py
@@ -10,11 +10,11 @@
 import dbus.mainloop.glib
 from obmc.dbuslib.bindings import get_dbus, DbusProperties, DbusObjectManager
 
-DBUS_NAME = 'org.openbmc.control.Chassis'
-OBJ_NAME = '/org/openbmc/control/chassis0'
-CONTROL_INTF = 'org.openbmc.Control'
+DBUS_NAME = "org.openbmc.control.Chassis"
+OBJ_NAME = "/org/openbmc/control/chassis0"
+CONTROL_INTF = "org.openbmc.Control"
 
-MACHINE_ID = '/etc/machine-id'
+MACHINE_ID = "/etc/machine-id"
 
 POWER_OFF = 0
 POWER_ON = 1
@@ -27,8 +27,8 @@
         uuid = ""
         try:
             with open(MACHINE_ID) as f:
-                data = f.readline().rstrip('\n')
-                if (len(data) == 32):
+                data = f.readline().rstrip("\n")
+                if len(data) == 32:
                     uuid = data
                 else:
                     print("ERROR:  UUID is not formatted correctly: " + data)
@@ -38,25 +38,23 @@
         return uuid
 
     def __init__(self, bus, name):
-        super(ChassisControlObject, self).__init__(
-            conn=bus,
-            object_path=name)
+        super(ChassisControlObject, self).__init__(conn=bus, object_path=name)
         # load utilized objects
         self.dbus_objects = {
-            'power_control': {
-                'bus_name': 'org.openbmc.control.Power',
-                'object_name': '/org/openbmc/control/power0',
-                'interface_name': 'org.openbmc.control.Power'
+            "power_control": {
+                "bus_name": "org.openbmc.control.Power",
+                "object_name": "/org/openbmc/control/power0",
+                "interface_name": "org.openbmc.control.Power",
             },
-            'host_services': {
-                'bus_name': 'org.openbmc.HostServices',
-                'object_name': '/org/openbmc/HostServices',
-                'interface_name': 'org.openbmc.HostServices'
+            "host_services": {
+                "bus_name": "org.openbmc.HostServices",
+                "object_name": "/org/openbmc/HostServices",
+                "interface_name": "org.openbmc.HostServices",
             },
-            'systemd': {
-                'bus_name': 'org.freedesktop.systemd1',
-                'object_name': '/org/freedesktop/systemd1',
-                'interface_name': 'org.freedesktop.systemd1.Manager'
+            "systemd": {
+                "bus_name": "org.freedesktop.systemd1",
+                "object_name": "/org/freedesktop/systemd1",
+                "interface_name": "org.freedesktop.systemd1.Manager",
             },
         }
 
@@ -64,59 +62,62 @@
         self.Set(DBUS_NAME, "uuid", self.getUuid())
         self.Set(DBUS_NAME, "reboot", 0)
 
-        bus.add_signal_receiver(self.power_button_signal_handler,
-                                dbus_interface="org.openbmc.Button",
-                                signal_name="Released",
-                                path="/org/openbmc/buttons/power0")
-        bus.add_signal_receiver(self.long_power_button_signal_handler,
-                                dbus_interface="org.openbmc.Button",
-                                signal_name="PressedLong",
-                                path="/org/openbmc/buttons/power0")
-        bus.add_signal_receiver(self.softreset_button_signal_handler,
-                                dbus_interface="org.openbmc.Button",
-                                signal_name="Released",
-                                path="/org/openbmc/buttons/reset0")
+        bus.add_signal_receiver(
+            self.power_button_signal_handler,
+            dbus_interface="org.openbmc.Button",
+            signal_name="Released",
+            path="/org/openbmc/buttons/power0",
+        )
+        bus.add_signal_receiver(
+            self.long_power_button_signal_handler,
+            dbus_interface="org.openbmc.Button",
+            signal_name="PressedLong",
+            path="/org/openbmc/buttons/power0",
+        )
+        bus.add_signal_receiver(
+            self.softreset_button_signal_handler,
+            dbus_interface="org.openbmc.Button",
+            signal_name="Released",
+            path="/org/openbmc/buttons/reset0",
+        )
 
-        bus.add_signal_receiver(self.host_watchdog_signal_handler,
-                                dbus_interface="org.openbmc.Watchdog",
-                                signal_name="WatchdogError")
-
+        bus.add_signal_receiver(
+            self.host_watchdog_signal_handler,
+            dbus_interface="org.openbmc.Watchdog",
+            signal_name="WatchdogError",
+        )
 
     def getInterface(self, name):
         o = self.dbus_objects[name]
-        obj = bus.get_object(o['bus_name'], o['object_name'], introspect=False)
-        return dbus.Interface(obj, o['interface_name'])
+        obj = bus.get_object(o["bus_name"], o["object_name"], introspect=False)
+        return dbus.Interface(obj, o["interface_name"])
 
-    @dbus.service.method(DBUS_NAME,
-                         in_signature='', out_signature='')
+    @dbus.service.method(DBUS_NAME, in_signature="", out_signature="")
     def powerOn(self):
         print("Turn on power and boot")
         self.Set(DBUS_NAME, "reboot", 0)
-        intf = self.getInterface('systemd')
-        f = getattr(intf, 'StartUnit')
-        f.call_async('obmc-host-start@0.target', 'replace')
+        intf = self.getInterface("systemd")
+        f = getattr(intf, "StartUnit")
+        f.call_async("obmc-host-start@0.target", "replace")
         return None
 
-    @dbus.service.method(DBUS_NAME,
-                         in_signature='', out_signature='')
+    @dbus.service.method(DBUS_NAME, in_signature="", out_signature="")
     def powerOff(self):
         print("Turn off power")
-        intf = self.getInterface('systemd')
-        f = getattr(intf, 'StartUnit')
-        f.call_async('obmc-chassis-hard-poweroff@0.target', 'replace')
+        intf = self.getInterface("systemd")
+        f = getattr(intf, "StartUnit")
+        f.call_async("obmc-chassis-hard-poweroff@0.target", "replace")
         return None
 
-    @dbus.service.method(DBUS_NAME,
-                         in_signature='', out_signature='')
+    @dbus.service.method(DBUS_NAME, in_signature="", out_signature="")
     def softPowerOff(self):
         print("Soft off power")
-        intf = self.getInterface('systemd')
-        f = getattr(intf, 'StartUnit')
-        f.call_async('obmc-host-shutdown@0.target', 'replace')
+        intf = self.getInterface("systemd")
+        f = getattr(intf, "StartUnit")
+        f.call_async("obmc-host-shutdown@0.target", "replace")
         return None
 
-    @dbus.service.method(DBUS_NAME,
-                         in_signature='', out_signature='')
+    @dbus.service.method(DBUS_NAME, in_signature="", out_signature="")
     def reboot(self):
         print("Rebooting")
         if self.getPowerState() != POWER_OFF:
@@ -124,8 +125,7 @@
             self.powerOff()
         return None
 
-    @dbus.service.method(DBUS_NAME,
-                         in_signature='', out_signature='')
+    @dbus.service.method(DBUS_NAME, in_signature="", out_signature="")
     def softReboot(self):
         print("Soft Rebooting")
         if self.getPowerState() != POWER_OFF:
@@ -133,18 +133,16 @@
             self.softPowerOff()
         return None
 
-    @dbus.service.method(DBUS_NAME,
-                         in_signature='', out_signature='')
+    @dbus.service.method(DBUS_NAME, in_signature="", out_signature="")
     def quiesce(self):
-        intf = self.getInterface('systemd')
-        f = getattr(intf, 'StartUnit')
-        f.call_async('obmc-host-quiesce@0.target', 'replace')
+        intf = self.getInterface("systemd")
+        f = getattr(intf, "StartUnit")
+        f.call_async("obmc-host-quiesce@0.target", "replace")
         return None
 
-    @dbus.service.method(DBUS_NAME,
-                         in_signature='', out_signature='i')
+    @dbus.service.method(DBUS_NAME, in_signature="", out_signature="i")
     def getPowerState(self):
-        intf = self.getInterface('power_control')
+        intf = self.getInterface("power_control")
         return intf.getPowerState()
 
     # Signal handler
@@ -169,7 +167,7 @@
         self.quiesce()
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
 
     bus = get_dbus()