diff --git a/cloudbaseinit/osutils/windows.py b/cloudbaseinit/osutils/windows.py
index 060d0b2e..8782a109 100644
--- a/cloudbaseinit/osutils/windows.py
+++ b/cloudbaseinit/osutils/windows.py
@@ -589,7 +589,7 @@ class WindowsUtils(base.BaseOSUtils):
         return service.StartMode
 
     def set_service_start_mode(self, service_name, start_mode):
-        #TODO(alexpilotti): Handle the "Delayed Start" case
+        # TODO(alexpilotti): Handle the "Delayed Start" case
         service = self._get_service(service_name)
         (ret_val,) = service.ChangeStartMode(start_mode)
         if ret_val != 0:
@@ -806,7 +806,7 @@ class WindowsUtils(base.BaseOSUtils):
                 try:
                     # NOTE(alexpilotti): the size provided by ctypes.sizeof
                     # is not the expected one
-                    #pdidd.contents.cbSize = ctypes.sizeof(
+                    # pdidd.contents.cbSize = ctypes.sizeof(
                     #    Win32_SP_DEVICE_INTERFACE_DETAIL_DATA_W)
                     pdidd.contents.cbSize = 6
 
diff --git a/cloudbaseinit/plugins/windows/extendvolumes.py b/cloudbaseinit/plugins/windows/extendvolumes.py
index c48bf8f4..1dfb5370 100644
--- a/cloudbaseinit/plugins/windows/extendvolumes.py
+++ b/cloudbaseinit/plugins/windows/extendvolumes.py
@@ -57,7 +57,7 @@ class ExtendVolumesPlugin(base.BasePlugin):
                 if volume_idxs is not None:
                     volume_name = ctypes.wstring_at(volume_prop.pwszName)
                     volume_idx = self._get_volume_index(volume_name)
-                    if not volume_idx in volume_idxs:
+                    if volume_idx not in volume_idxs:
                         extend_volume = False
 
                 if extend_volume:
diff --git a/cloudbaseinit/utils/crypt.py b/cloudbaseinit/utils/crypt.py
index 1eee7c14..c125e66b 100644
--- a/cloudbaseinit/utils/crypt.py
+++ b/cloudbaseinit/utils/crypt.py
@@ -161,7 +161,7 @@ class CryptManager(object):
         key_type = pub_key[offset:offset + key_type_len]
         offset += key_type_len
 
-        if not key_type in ['ssh-rsa', 'rsa', 'rsa1']:
+        if key_type not in ['ssh-rsa', 'rsa', 'rsa1']:
             raise CryptException('Unsupported SSH key type "%s". '
                                  'Only RSA keys are currently supported'
                                  % key_type)